Chain locks are a popular choice for cyclists seeking robust security for their bikes, often favored for their flexibility and resistance to certain types of attacks. While U-locks often take the spotlight, chain locks offer unique advantages that make them an excellent option for many riders. This comprehensive guide dives deep into the world of Chain Bike Locks, exploring their strengths, weaknesses, and the best models available on the market to help you make an informed decision for your bike security needs.
Firstly, let’s consider the key benefits of chain locks. Their length and flexibility are paramount. Unlike rigid U-locks, chain bike locks can wrap around a wider variety of objects, allowing you to secure your bike to larger or awkwardly shaped fixtures. This adaptability is invaluable in urban environments where bike parking options can be limited.
Secondly, portability can be surprisingly convenient with certain chain locks. For cyclists who find U-lock frame mounts cumbersome, shorter and thinner chain bike locks offer an alternative. They can be easily coiled and carried around a seat post, providing a practical solution for everyday cyclists.
Chain lock around seat post
Finally, chain bike locks exhibit enhanced resistance against specific theft techniques. They are inherently resistant to bottle jack and leverage attacks, which can compromise some other lock types. Furthermore, their construction makes them more challenging to cut with power tools like angle grinders compared to some thinner lock designs.
However, these advantages are accompanied by a significant drawback: weight. Chain bike locks are considerably heavier than U-locks offering comparable security levels. This weight factor necessitates categorizing chain locks into two distinct groups based on their intended use:
- Portable Chain Bike Locks: Lighter models designed for daily use and carrying on your bike.
- Stationary Chain Bike Locks: Heavier, more robust chains intended for home, garage, or workplace security, and not meant for regular transport.
Before purchasing a chain bike lock, it’s crucial to determine your primary need: portability for on-the-go security or stationary security for fixed locations.
To assist you in your selection, we’ve tested and compiled a list of 6 of the best chain bike locks, categorized for portable and stationary security. Following these recommendations, you’ll find a detailed guide to choosing the right chain bike lock for your specific circumstances, including a helpful quiz to assess your required security level.
The 6 Best Bike Chain Locks
1. Seatylock Viking Silver: Best Mid-Security Portable Chain Bike Lock
The SeatyLock Viking Silver stands out as the only chain bike lock with 7mm links to achieve a Sold Secure Silver rating. This distinction highlights its exceptional strength-to-weight ratio, allowing for a longer chain without excessive heaviness.
Seatylock Viking Silver 90| Seatylock Viking Silver 90 |
|---|
| Check price: > Check price at Amazon |
| Chain thickness: 7 mm |
| Weight: 2.98 lbs (1.35 kg) |
| Length: 35.4″ (90 cm) |
| Other Security Ratings: |
Viking Silver 90 Pros
- Unique magnetic fastening for ease of use
- Easy to carry and handle
- Good medium-level security for everyday use
- Versatile locking options due to chain length
Viking Silver 90 Cons
- Rubber sheath covering could be more durable
- Cheaper Silver-rated locks are available
During testing of the 35.4″ (90 cm) version, weighing 2.98 lbs (1.35 kg), comparable to 3.5 cans of soda, it became clear that while not ultra-lightweight, its extended length provides significantly more locking versatility than a U-lock. It can even secure two bikes simultaneously.
Seatylock Viking Silver 90 around lamppost
However, the 7mm chain links are vulnerable to bolt cutters, especially if the lock is positioned close to the ground, allowing leverage for thieves. To mitigate this, keep the chain bike lock elevated and tightly wrapped around the bike frame, away from ground-level access.
Seatylock Viking Silver 90 high up on stand
A notable feature of the SeatyLock Viking is its magnetized shackle, simplifying closure, especially in crowded bike parking areas. This magnetic feature proved convenient during testing.
The SeatyLock Viking is available in lengths up to 55.1″ (140 cm) for those needing extra reach. A shorter 21.5″ (55 cm) version would be ideal for urban cyclists prioritizing chain flexibility with U-lock-like compactness.
Seatylock Viking Silver 90 vs Kryptonite Kryptolok
Potential drawbacks include its mid-security level and build quality. The rubber sheath at the chain end appears less robust compared to Kryptonite’s molded plastic finishes.
Despite these minor points, the Viking Silver series offers the lightest Sold Secure Silver rated chain bike locks. If length and manageable weight are priorities, the SeatyLock Viking Silver is a strong contender.
For a detailed analysis, refer to our hands-on SeatyLock Viking Silver 90 review.
2. Kryptonite Kryptolok Series 2: Chain Bike Lock Balancing Security and Practicality
The Kryptonite Kryptolok Series 2 range elevates security with 9mm chain links and a Pedal Cycle Gold rating from Sold Secure. We tested the shortest variant, the 955 Mini.
Kryptonite KryptoLok Series 2 955 Mini
| Kryptonite Kryptolok Series 2 955 Mini |
|---|
| Check price: > Check price at Amazon |
| Chain thickness: 9 mm |
| Weight: 3.90 lb (1.77 kg) |
| Length: 21.5″ (55 cm) |
| Other Security Ratings: |
Kryptolok Series 2 955 Mini Pros
- Excellent build quality and durability
- Sold Secure Pedal Gold certification
- Compact and lightweight design
Kryptolok Series 2 955 Mini Cons
- Short length may be restrictive for some locking scenarios
- Not the highest security level within the Gold rating
The Kryptonite KryptoLok Series 2 955 Mini, at 21.5″ (55 cm), offers a locking space comparable to a standard U-lock. This shorter length reduces weight and bulk, enhancing portability.
Kryptonite Kryptolok Chain Mini 955 around seat stays
Despite its enhanced security over the SeatyLock Viking 90, the Kryptonite KryptoLok Series 2 955 Mini weighs only slightly more at 3.90 lb (1.77 kg).
Kryptonite Kryptolok Chain Mini 955 around lamppost
For cyclists needing greater locking flexibility, the Kryptonite KryptoLok Series 2 is available in longer lengths: 37.5″ (95 cm), 47.3″ (120 cm), and 60.0″ (150 cm). However, weight increases significantly with length. The 60.0″ (150 cm) version reaches 8.10 lb (3.67 kg).
Kryptonite Kryptolok Chain Mini 955 around seat post
Combination lock versions are also available in two lengths, uniquely holding Sold Secure ratings (excluding lower-rated Bronze combination chains).
While not designed for high-risk areas, the Kryptonite KryptoLok Series 2 offers robust security against common theft attempts when used correctly, and its build quality ensures longevity.
For a more detailed examination, see our full Kryptonite KryptoLok Series 2 955 Mini review.
3. Best High Security Portable Chain Bike Lock: Kryptonite Evolution or Hiplok Gold?
Choosing between the Kryptonite Evolution Series 4 1055 Mini and the Hiplok Gold for the best high-security portable chain bike lock is challenging, as each excels in different areas.
The Kryptonite Evolution Series 4 1055 Mini prioritizes security and compactness, being lighter and more secure, but shorter.
Kryptonite Evolution Series 4 1055 Mini
| Kryptonite Evolution Series 4 1055 Mini |
|---|
| Check price: > Check price at Amazon |
| Chain thickness: 10 mm |
| Weight: 4.40 lbs (2.00 kg) |
| Length: 21.5″ (55 cm) |
| Other Security Ratings: |
Evolution Series 4 1055 Mini Pros
- Excellent build quality and high durability
- Top-tier portable security level
- Compact and relatively lightweight for its security
Evolution Series 4 1055 Mini Cons
- Limited length may not suit all locking situations
- Less convenient to carry compared to some alternatives
The Hiplok Gold emphasizes portability and locking options, being easier to carry and longer, but heavier and slightly less secure.
Hiplok Gold chain lock| Hiplok Gold Chain |
|---|
| Check price: > Check price at Amazon |
| Chain thickness: 10 mm |
| Weight: 4.85 lb (2.2 kg) |
| Length: 33.5″ (85 cm) |
| Other Security Ratings: |
Hiplok Gold Chain Pros
- Wearable design for easy carrying around the waist
- High level of portable security for urban environments
- Generous chain length provides numerous locking possibilities
Hiplok Gold Chain Cons
- Slightly less secure than the Kryptonite Evolution Series 4
- Heavier than comparable security level locks
Both the Kryptonite Evolution Series 4 and the Hiplok Gold, with 10mm chain links, offer enhanced security over the Kryptonite KryptoLok Series 2, despite sharing the same Pedal Cycle Gold rating from Sold Secure.
Kryptonite Evolution Series 4 1055 around front wheel
Despite the identical Sold Secure Gold rating, the Kryptonite Evolution achieves a 3-star rating from ART (suitable for motorcycles), while the Hiplok Gold has a 2-star rating, indicating slightly lower security.
Hiplok Gold chain lock around back wheel
However, 10mm chain bike locks become heavy for daily carry. Here, the Hiplok Gold’s wearable design offers a significant advantage. It can be worn around the waist like a belt.
Hiplok Gold Chain worn like belt
Note: It’s designed to clip around your waist for carrying, not for locking while worn, which would be unsafe. The Hiplok Gold adjusts to fit waists from 28” (71 cm) to 44” (112 cm) and weighs 5.3 lb (2.4 kg), noticeable weight but surprisingly comfortable when worn.
The Hiplok Gold comes in one length (33.5″ / 85 cm), offering ample locking options. The Kryptonite Evolution Series 4 offers four lengths, from 21.5″ (55 cm) to 63.0″ (160 cm).
Kryptonite Evolution Series 4 1055 with Coke
For portable security, the shortest 21.5″ (55 cm) Kryptonite Evolution Series 4 1055 Mini is recommended. The 35.5″ (90 cm) version, comparable in length to the Hiplok Gold, weighs significantly more.
Hiplok Gold chain with Coke
The choice depends on priorities: Hiplok Gold for length and portability, or Kryptonite Evolution Series 4 1055 Mini for higher security and lighter weight. For city bikes or minimal locking needs, the Kryptonite is ideal. For bulkier e-bikes or locking multiple bikes, Hiplok Gold offers better versatility.
See detailed reviews of the Kryptonite Evolution Series 4 1055 Mini and Hiplok Gold for further insights.
4. Hiplok DXXL: Best Stationary Chain Bike Lock for E-bikes and High Security
The Hiplok DXXL is designed as a high-security stationary chain bike lock system, ideal for securing bikes at home, in garages, or sheds.
Hiplok DXXL| Hiplok DXXL |
|---|
| Check price: > Check price at Amazon |
| Chain thickness: 14 mm |
| Weight: 13.46 lb (6.11 kg) |
| Length: 59″ (150 cm) |
| Other Security Ratings: |
Hiplok DXXL Pros
- Extremely high security for maximum protection
- Versatile for both stationary and limited portable use
- Generous chain length with a noose design for efficiency
Hiplok DXXL Cons
- High price point reflecting its top-tier security
Weighing 13.46 lb (6.11 kg), equivalent to 16.5 cans of soda, the Hiplok DXXL is not intended for daily portability. Its 14mm chain links and accompanying 14mm shackle U-lock offer formidable resistance to cutting and forced entry.
The Hiplok DXXL combo achieves Sold Secure Pedal Cycle Diamond, the highest security rating for bicycle locks. Both the chain and the included Hiplok DX U-lock contribute to this top-level security.
Hiplok DXXL chain around bike
The 59″ (150 cm) chain, with a noose design, maximizes usable length, reducing slack and enhancing security. The included U-lock further extends locking options.
Paired with a ground or wall anchor like the Hiplok ANKR [Amazon], the Hiplok DXXL provides a highly secure home bike storage solution.
The Hiplok DX U-lock, included with the DXXL, can also be used independently as a portable lock. It features a belt clip for convenient carrying and is recognized as a top-rated mini U-lock.
Hiplok DX around back wheel
The Hiplok DXXL offers both exceptional stationary and practical portable security. While the Hiplok DX is a mini U-lock, potentially limiting locking space, it’s robust. For e-bike owners, the combined chain and U-lock system can be transported, leveraging the e-bike’s motor to offset the weight.
For more on the U-lock component, see our Hiplok DX review. A full review of the Hiplok XL chain is forthcoming.
5. Hiplok Mega Chain: The Ultimate Stationary Chain Bike Lock for Maximum Security
For those seeking the absolute highest level of stationary chain bike lock security, the Hiplok Mega Chain surpasses even the Hiplok DXXL.
Hiplok Mega Chain| Hiplok Mega Chain |
|---|
| Check price: > Check price at Amazon |
| Chain thickness: 22 mm |
| Weight: 27 lb (12.3 kg) |
| Length: 51″ (130 cm) |
| Other Security Ratings: |
Hiplok Mega Chain Pros
- Offers the highest security level currently available in a chain lock
- Noose design maximizes chain length effectiveness
- Compatible with high-security D1000 & DX1000 U-locks
Hiplok Mega Chain Cons
- Extremely expensive, reflecting its unparalleled security
- Very heavy and bulky, unsuitable for portable use
- May not be compatible with all ground anchor types due to link size
While the Hiplok DXXL is sufficient for most, the Hiplok Mega Chain addresses the theoretical vulnerability of 14mm chains to large bolt cutters under ideal conditions. Featuring 22mm links, the Hiplok Mega Chain is impervious to bolt cutters.
This chain bike lock represents the pinnacle of physical security. Weighing 27 lb (12.3 kg), equivalent to 33 cans of soda, and measuring 51″ (130 cm) long, it utilizes a noose design for efficient length use.
Hiplok Mega Chain around motorbike
The Hiplok Mega Chain does not include a lock, and its massive 22mm links may not fit standard ground anchors. Careful consideration is needed for pairing it with a compatible lock and anchor.
It’s designed to work with angle grinder resistant U-locks like the Hiplok D1000 and DX1000 (and Litelok X1/X3). You can loop the chain and secure it with one of these U-locks to a ground anchor.
Check our guide to the best ground anchors for anchor compatibility with the Hiplok Mega Chain.
Hiplok Mega Chain noose
Hiplok offers bundles combining the Mega Chain with the DX1000 U-lock or with the DX1000 and A1000 ground anchor, providing cost savings.
The Hiplok Mega Chain, when properly paired with a suitable lock and ground anchor, creates an almost impenetrable security setup for your bicycle.
How to Choose a Chain Bike Lock for Your Bicycle
Choosing the right chain bike lock involves considering several key factors. We’ll explore these, including a quiz to determine your ideal security rating, and review chain bike locks with Sold Secure ratings from 6mm to 16mm link thicknesses.
The Chain
Chain quality varies significantly. For reliable security, chain bike lock links should be constructed from high-quality, core hardened steel alloy that balances hardness and resistance to brittleness. Reputable brands like Kryptonite, OnGuard, Abus, and Hiplok are recommended for ensuring material quality.
Chain link shapes also differ. While rounded edges are common, some security chains feature hexagonal or square links, purportedly offering enhanced resistance to bolt cutters by hindering grip and distributing pressure.
Hexagonal chain links
Round chain links
However, used bolt cutters with blade imperfections can actually grip hexagonal or square links more easily, potentially negating any perceived advantage. Link shape is less critical than link thickness.
The thicker the chain bike lock links, the greater the resistance to cutting.
| Chain Link Thickness | Vulnerability to Bolt Cutters |
|---|---|
| < 10 mm | Yes (medium-sized bolt cutters) |
| 13 – 15 mm | Yes (only largest 36″ and 42″ bolt cutters) |
| ≥ 16 mm | No (resistant to manual bolt cutters) |
Links under 10 mm are easily cut with medium bolt cutters, especially if positioned for leverage. 10-12 mm links can be cut by determined thieves with medium bolt cutters and leverage. 13-15 mm links require the largest 42″ bolt cutters, uncommon among bike thieves. Links 16 mm and thicker are impervious to manual bolt cutters.
Different chain link sizes
Regardless of thickness, minimizing ground contact significantly reduces bolt cutter vulnerability. Thieves rely on ground leverage to maximize bolt cutter force. Elevating the chain bike lock makes cutting attempts far more difficult and less effective.
The Lock
A chain bike lock is only as secure as its weakest component. A robust chain paired with a weak lock mechanism compromises overall security. Locks integrated into chain bike locks vary from padlocks to mini U-locks or permanently integrated mechanisms.
The locking mechanism must be reliable and resist common attack methods like leverage, picking, pulling, and drilling.
Kryptonite New York disc lock
OnGuard Beast padlock
Shackles, if present, should be at least as thick as the chain links or shrouded to protect against bolt cutters.
Chain Bike Lock: Length vs Weight
A key advantage of chain bike locks over U-locks is their extended length, offering greater flexibility in securing bikes to various objects. However, length directly correlates with weight. Chain bike locks are inherently heavy, and even lighter chains can be cumbersome to carry in bags.
While some cyclists attach them to racks, baskets, or seat posts, minimizing weight is crucial. Choose the shortest chain bike lock length that meets your typical locking needs. Measure with rope to determine the necessary length before purchasing.
Chain bike locks will always be heavier than U-locks providing comparable security.
| Kryptonite Kryptolok Chain Lock |
|---|
| Internal Locking Space: 21.5″ (55 cm) |
| Weight: 3.90 lb (1.77 kg) |
| Security rating: 6/10 |
| Kryptonite Kryptolok U-Lock |
|---|
| Internal Locking Space: 21.5″ (55 cm) |
| Weight: 2.85 lb (1.29 kg) |
| Security rating: 6/10 |
For example, the Kryptonite Kryptolock Series 2 U-lock weighs 2.85 lb (1.29 kg). The lightest Kryptolock Series 2 chain bike lock at the same security level weighs 3.90 lbs (1.77 kg), nearly 30% heavier. Both offer similar internal locking space (21.5″ / 55 cm).
A longer 37.5″ (95 cm) Kryptolock Series 2 chain bike lock weighs 5.55 lbs (2.52 kg), almost double the U-lock’s weight.
If weight is a primary concern, consider U-locks or folding locks instead of chain bike locks.
Portable vs Stationary Chain Bike Locks
The distinction between portable and stationary chain bike locks is fundamental. Portable chains are for everyday carry and use on the go, securing bikes to public fixtures. Stationary chains are for home or fixed location security, protecting bikes in sheds, garages, or workplaces.
While some chain bike locks attempt to serve both purposes, they often compromise effectiveness in one area. A dedicated two-lock system—one portable for daily use and one stationary for home security—generally offers the best security and practicality.
Choosing a Portable Chain Bike Lock
Determining Security Level for Portable Chain Bike Locks
Sold Secure ratings are the industry standard for evaluating chain bike lock security. They independently test and rate locks as Bronze (lowest), Silver, Gold, or Diamond (highest security).
For deeper insights into Sold Secure and bike lock security, consult our guide on choosing the best bike lock.
Use the following quiz to determine your necessary Sold Secure rating:
(Quiz content from original article to be integrated here – needs to be extracted and translated)
Based on your quiz responses, a Silver, Gold, or Diamond rated chain bike lock will be recommended. Bronze-rated locks are insufficient for reliable bike security.
Security within each Sold Secure rating varies. Thicker chain bike lock links within a rating typically indicate higher security. Choose a thicker Silver, Gold, or Diamond chain for increased protection.
Selecting the Right Length for Portable Chain Bike Locks
The extended length of chain bike locks provides locking versatility beyond U-locks. Longer chains offer more options but add weight and cost. Choose the shortest length that meets your typical locking scenarios. Use rope to simulate length needs before purchase.
Best Practices for Securing Bikes with Portable Chain Bike Locks
Avoid using chain bike locks to secure the frame and wheels in a manner that positions the chain close to the ground. This increases vulnerability to bolt cutters.
Chain lock close to the ground
Ground proximity enables thieves to leverage bolt cutters effectively.
Kryptonite Kryptolok Chain Mini 955 around lamppost
Instead, secure your frame tightly, wrapping the chain bike lock around the top tube. This elevates the lock, hindering bolt cutter attacks.
Explore alternative wheel security methods (wheel locks) and consult our guide on how to lock your bike properly.
For frame and rear wheel protection with a chain bike lock:
Longer chains can secure both the top tube and rear wheel while maintaining elevation.
Chain lock further from the ground
Alternatively, secure the chain through seat stays and the rear wheel, also keeping it off the ground.
Kryptonite Kryptolok Chain Mini 955 around seat stays
Carrying Portable Chain Bike Locks
Shorter, thinner chain bike locks can be wrapped around seat posts. Chain bags are available for frame mounting. Some chain bike locks are designed to be worn around the waist.
Hiplok Gold chain lock belt
Consider carrying options before purchase. Ensure seat post space or bag capacity. Chains can be more challenging to transport than other lock types.
6 mm Chain Bike Locks
6mm chain bike locks are generally not recommended due to low security and easy cutting. They rarely achieve Sold Secure ratings above Bronze, insufficient for bike protection.
However, the tex-lock is a unique exception. This 6mm chain encased in a textile cover resembles rope more than chain.
Tex-lock eyelet with X-lock
The Tex-lock eyelet chain bike lock paired with the Sold Secure Gold rated X-lock, showcasing its unique textile-covered design.
The textile cover adds protection, and paired with the Sold Secure Gold rated X-lock, it becomes versatile. In high-risk situations, use the X-lock for the frame and chain for wheels. In low-risk scenarios, use the chain for the frame and X-lock for a wheel, leveraging the chain’s length.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Tex-Lock Eyelet and X-lock S | 1.42 kg(3.13 lb) | 31.5 “(80 cm) | Pedal Gold | 3 stars |
| Tex-Lock Eyelet and X-lock M | 1.69 kg(3.73 lb) | 47.2 “(120 cm) | Pedal Gold | 3 stars |
| Tex-Lock Eyelet and X-lock L | 1.94 kg(4.28 lb) | 63.0 “(160 cm) | Pedal Gold | 3 stars |
However, the textile-covered chain itself is not Sold Secure rated and is only suitable for short stops in low-risk areas. The X-lock is narrow and fits only Sheffield stand-sized fixtures.
Consult our tex-lock review and lightweight bike lock guide (lightweight bike locks) before purchasing.
Use code “bestbikelock10” for 10% off Tex-lock products.
7 mm Chain Bike Locks
7mm chain bike locks are at the lower threshold of acceptable bike security. The Seatylock Viking Silver is the only 7mm chain with a Sold Secure Silver rating.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Seatylock Viking Silver 90 | 1.35 kg(2.98 lb) | 35.4 “(90 cm) | Pedal Silver | |
| Seatylock Viking Silver 110 | 1.6 kg(3.53 lb) | 43.3 “(110 cm) | Pedal Silver | |
| Seatylock Viking Silver 140 | 1.95 kg(4.3 lb) | 55.1″(140 cm) | Pedal Silver |
In low-risk areas, 7mm chain bike locks may suffice for short durations with vigilant locking techniques. Avoid prolonged unattended parking.
Do not use 7mm chains like U-locks, close to the ground. Bolt cutters can easily compromise them with ground leverage.
Seatylock Viking Silver 90 around top tube
Wrap 7mm chain bike locks tightly around the top tube, elevating them and hindering bolt cutter access. While large bolt cutters and sufficient force could still potentially cut 7mm chains even when elevated, most bike thieves lack such tools and capability.
Prioritize wheel security through alternative methods (wheel locks) to avoid compromising the entire bike’s security with a ground-level chain.
8 mm Chain Bike Locks
8mm chain bike locks, only slightly thicker than 7mm, offer moderately improved security but remain Silver-rated by Sold Secure.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Abus Steel-O-Chain9808 85 | 1.75 kg(3.86 lb) | 33.46 “(85 cm) | Pedal Silver | 2 stars |
| Abus Steel-O-Chain9808 110 | 2.55 kg(5.62 lb) | 43.3 “(110 cm) | Pedal Silver | 2 stars |
| Abus Steel-O-Chain9808 140 | 2.8 kg(6.17 lb) | 55.11 “(140 cm) | Pedal Silver | 2 stars |
| Abus Steel-O-Chain9808 170 | 3.21 kg(7.08 lb) | 66.93 “(170 cm) | Pedal Silver | 2 stars |
| Abus Iven Chain8210 85 | 1.93 kg(4.26 lb) | 33.0 “(85 cm) | Pedal Silver | 2 stars |
| Abus Iven Chain8210 110 | 2.5 kg(5.5 lb) | 43.0 “(110 cm) | Pedal Silver | 2 stars |
| Hiplok Original | 1.8 kg(3.97 lb) | 33.46 “(85 cm) | Pedal Silver | 2 stars |
| Hiplok Homie Silver | 2.6 kg(5.73 lb) | 47.24 “(120 cm) | Pedal Silver | 2 stars |
| Squire DCL1 J3Chain Lock | 1.7 kg(3.75 lb) | 36.02 “(91.5 cm) | Pedal Silver | |
| Oxford Chain 8 | 2.0 kg(4.5 lb) | 39.37 “(100 cm) | Pedal Silver | |
| Trelock BC 480 110 | 1.9 kg(4.19 lb) | 43.3 “(110 cm) | Pedal Silver | |
| AXA Absolute 8-90 | 1.74 kg(3.84 lb) | 35.43 “(90 cm) | Pedal Silver | 2 stars |
| AXA Absolute 8-110 | 1.96 kg(4.32 lb) | 43.3 “(110 cm) | Pedal Silver | 2 stars |
| Squire Chainlok 8 | 1.8 kg(3.97 lb) | 33.5 “(85 cm) | Pedal Silver | |
| Squire J3 | 1.73 kg(3.81 lb) | 36 “(91.5 cm) | Pedal Silver | |
| Abus Ionus8900 | 2.08 kg(1.86 lb) | 43.3 “(110 cm) | Pedal Silver | 2 stars |
| Linka Lasso 8 | 1.8 kg(3.9 lb) | 39.4 “(100 cm) | Pedal Silver | 2 stars |
The Hiplok Original [Amazon] is a standout 8mm chain bike lock with a good weight-to-length ratio and a convenient wearable design.
The wearable design of Hiplok chain bike locks, offering convenient portability around the waist.
Its integrated Velcro strap allows waist-worn carry, distributing weight comfortably.
Avoid the Hiplok Homie Silver for stationary home use; better protection is recommended for home security.
The weight of 8mm chain bike locks becomes considerable. Even lighter models weigh as much as 4.5 cans of soda, exceeding the weight of many Sold Secure Gold rated U-locks.
Employ the same elevated locking technique as with 7mm chains, securing 8mm chain bike locks tightly around the top tube or seat stays to mitigate bolt cutter risks.
9 mm Chain Bike Locks
9mm chain bike locks offer significantly enhanced security, with many achieving Sold Secure Gold ratings. However, these Gold ratings often correspond to a 2/5 ART rating, indicating lower-end Gold security.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Kryptonite KryptoLok Series 2 990 Combo Chain | 2.65 kg(5.85 lb) | 35.5 “(90 cm) | Pedal Gold | |
| Kryptonite KryptoLok Series 2 912 Combo Chain | 3.33 kg(7.35 lb) | 47.3 “(120 cm) | Pedal Gold | |
| Kryptonite KryptoLok Series 2 955 Mini Integrated Chain | 1.77 kg(3.90 lb) | 21.5 “(55 cm) | Pedal Gold | 2 stars |
| Kryptonite KryptoLok Series 2 995 Integrated Chain | 2.52 kg(5.55 lb) | 37.5 “(95 cm) | Pedal Gold | 2 stars |
| Kryptonite KryptoLok Series 2 912 Integrated Chain | 3.04 kg(6.7 lb) | 47.3 “(120 cm) | Pedal Gold | 2 stars |
| Kryptonite KryptoLok Series 2 915 Integrated Chain | 3.67 kg(8.10 lb) | 60.0 “(150 cm) | Pedal Gold | 2 stars |
| Abus CityChain 1010 85 | 1.95 kg(4.3 lb) | 33.0 “(85 cm) | Pedal Gold | |
| Abus CityChain 1010 110 | 2.4 kg(5.29 lb) | 43.0 “(110 cm) | Pedal Gold | |
| Abus CityChain 1010 140 | 2.74 kg(6.04 lb) | 55.0 “(140 cm) | Pedal Gold | |
| Abus CityChain 1010 170 | 3.38 kg(7.45 lb) | 67.0 “(170 cm) | Pedal Gold | |
| Axa Cherto 95 | 2.16 kg(4.76 lb) | 37.4 “(95 cm) | Pedal Gold | |
| AXA Absolute 9-90 | 2.24 kg(4.94 lb) | 35.4 “(90 cm) | Pedal Gold | 2 stars |
| AXA Absolute 9-110 | 2.73 kg(6.02 lb) | 43.3 “(110 cm) | Pedal Gold | 2 stars |
| AXA Newton ProMOTO-2 | 2.35 kg(5.18 lb) | 39.37 “(100 cm) | Pedal Gold | |
| Milenco Coleraine Chain Lock 100 | 2.4 kg(5.29 lb) | 39.37 “(100 cm) | Pedal Gold | |
| Milenco Coleraine Chain Lock 140 | 2.98 kg(6.57 lb) | 55.1 “(140 cm) | Pedal Gold | |
| Milenco Coleraine Chain Lock 180 | 3.90 kg(8.6 lb) | 70.87 “(180 cm) | Pedal Gold | |
| Trelock BC 580 | 2.2 kg(4.85 lb) | 43.3 “(110 cm) | Pedal Gold | 2 stars |
The Kryptonite Kryptolok Series 2 range and Abus CityChains [Amazon] are excellent 9mm chain bike lock options. Abus CityChains offer better weight-to-length ratios, being lighter than Kryptonite, while Kryptonite chains are typically more affordable and offer optional anti-theft protection for bikes up to $1,500 / £800.
9mm chain bike locks are heavy. Even the short Kryptonite Series 2 955, with U-lock-like locking space, weighs over 4 cans of soda. Longer chains are significantly heavier.
Kryptonite and Abus offer carry cases for frame mounting, potentially more stable than U-lock brackets. However, always verify weight before purchasing. The heft of chain bike locks can be surprising.
10 mm Chain Bike Locks
10mm chain bike locks approach the limit of portable security, being very heavy for daily carry.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Master Lock 8234 | 2.3 kg(5.07 lb) | 35.43 “(90 cm) | Pedal Silver | |
| Kryptonite Evolution Series 4 1055 | 2 kg(4.4 lb) | 21.5 “(55 cm) | Pedal Gold | 3 stars |
| Kryptonite Evolution Series 4 1090 | 2.77 kg(6.10 lb) | 35.5 “(90 cm) | Pedal Gold | 3 stars |
| Kryptonite Evolution Series 4 1016 | 4.40 kg(9.70 lb) | 63.0 “(160 cm) | Pedal Gold | 3 stars |
| OnGuard Mastiff 8019 | 3.04 kg(6.7 lb) | 43.0 “(110 cm) | Pedal Gold | |
| OnGuard Mastiff 8019L | 4.76 kg(10.5 lb) | 72.0 “(183 cm) | Pedal Gold | |
| Abus Granit CityChain X-Plus 1060 85 | 2.1 kg(4.63 lb) | 33.0 “(85 cm) | Pedal Gold | 3 stars |
| Abus Granit CityChain X-Plus 1060 110 | 2.65 kg(5.84 lb) | 43.0 “(110 cm) | Pedal Gold | 3 stars |
| Abus Granit CityChain X-Plus 1060 140 | 3.26 kg(7.19 lb) | 55.0 “(140 cm) | Pedal Gold | 3 stars |
| Abus Granit CityChain X-Plus 1060 170 | 3.75 kg(8.27 lb) | 67.0 “(170 cm) | Pedal Gold | 3 stars |
| Abus Ivy Chain 9100 85 | 2.45 kg(5.4 lb) | 33.0 “(85 cm) | Pedal Gold | |
| Abus Ivy Chain 9100 110 | 2.9 kg(6.4 lb) | 43.0 “(110 cm) | Pedal Gold | |
| Abus Ivy Chain 9100 140 | 3.85 kg(8.49 lb) | 55.0 “(140 cm) | Pedal Gold | |
| Abus Ivy Chain 9100 170 | 4.85 kg(10.69 lb) | 67.0 “(170 cm) | Pedal Gold | |
| Hiplok Gold | 2.4 kg(5.3 lb) | 33.5 “(85 cm) | Pedal Gold | 2 stars |
| Hiplok Homie | 4.6 kg(10.14 lb) | 59 “(150 cm) | Pedal Gold | 2 stars |
| Hiplok EDX | 3.5 kg(7.72 lb) | 39.37 “(100 cm) | Pedal Gold | |
| Oxford HD Loop Chain Lock | 2.81 kg(6.19 lb) | 47.2 “(120 cm) | Pedal Gold | |
| Seatylock Viking 90 | 2.4 kg(5.3 lb) | 35.4 “(90 cm) | Pedal Gold | |
| Seatylock Viking 110 | 2.8 kg(6.2 lb) | 43.3 “(110 cm) | Pedal Gold | |
| Seatylock Viking 140 | 3.40 kg(7.5 lb) | 55.1 “(140 cm) | Pedal Gold | |
| Zefal K-Traz M18 | 3.25 kg(7.17 lb) | 43.3 “(110 cm) | Pedal Gold | |
| Yale YCL3 Chain Lock 110 | 3.15 kg(6.94 lb) | 43.3 “(110 cm) | Pedal Gold | |
| Yale YCL3 Chain Lock 180 | 4.63 kg(10.2 lb) | 70.8 “(180 cm) | Pedal Gold | |
| Pewag VKK10x35 Chain | 2.93 kg(6.46 lb) | 39.97 “(100 cm) | Pedal Gold | |
| Burg Wachter 1010S | 2.02 kg(4.45 lb) | 39.97 “(100 cm) | Pedal Gold | |
| Burg Wachter 1015S | 2.94 kg(6.48 lb) | 59.6 “(150 cm) | Pedal Gold | |
| Burg Wachter 1020S | 3.96 kg(8.73 lb) | 78.74 “(200 cm) | Pedal Gold | |
| Squire Warrior 55CS Chain 1200 | 4.05 kg(8.93 lb) | 47.28 “(120 cm) | Pedal Gold | |
| Squire Warrior Combi 55CS 1200 | 4.07 kg(8.97 lb) | 47.28 “(120 cm) | Pedal Gold | |
| Oxford Chain 10 | 3.3 kg(7.28 lb) | 55.11 “(140 cm) | Pedal Gold | |
| Oxford HD Chain | 3.37 kg(7.43 lb) | 59 “(150 cm) | Pedal Gold | |
| OnGuard Mastiff 8019LP | 3.67 kg(8.1 lb) | 51.18 “(130 cm) | Pedal Gold | |
| Squire Stronghold IC850 | 3.26 kg(7.19 lb) | 85 cm | Pedal Diamond | |
| Kryptonite EvolutionSeries 4 1012 | 3.08 kg(6.8 lb) | 47.25 “(120 cm) | Pedal Gold | |
| Squire G3 | 2.79 kg(6.15 lb) | 36 “(91.5 cm) | Powered Gold |
Many 10mm chain bike locks are better suited for stationary use with separate padlocks. The Hiplok Homie [Amazon] is specifically designed for home use, offering a generous 60″ (150 cm) length for securing multiple bikes.
Hiplok Homie comes with a wall hook
The Hiplok Homie chain bike lock designed for home use, featuring a wall hook for convenient storage.
For portable use, integrated locks are more convenient for frequent locking and unlocking. The Hiplok Gold [Amazon] prioritizes portability despite its separate padlock.
For locking speed, consider the Kryptonite Evolution Series 4 1055 Mini [Amazon], Abus Granit CityChain X-Plus 1060/85 [Amazon], or Seatylock Viking Gold with integrated locks. The Seatylock Viking [Amazon] series even features a magnetic mechanism for easier closure.
See our reviews of the Hiplok Gold and Kryptonite Evolution chain lock for more details.
Chain Bike Locks for Street and Home Use
These chain bike locks can serve both portable and stationary roles, but portability often necessitates shorter lengths, potentially limiting home use versatility.
12 mm Chain Bike Locks
12mm chain bike locks are at the upper limit of portable daily use, being heavy and bulky but offering high security.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Kryptonite New York Chain 1210 | 3.92 kg(8.65 lb) | 39.0 “(100 cm) | Pedal Gold | |
| Kryptonite New York Chain 1217 | 5.96 kg(13.15 lb) | 67.0 “(170 cm) | Pedal Gold | |
| Kryptonite New York Noose 1275 | 3.15 kg(6.95 lb) | 30.0 “(75 cm) | Pedal Gold | |
| Kryptonite New York Noose 1213 | 4.79 kg(10.55 lb) | 51.0 “(130 cm) | Pedal Gold | |
| Oxford HD Max Chain 120 | 2.54 kg(5.60 lb) | 47.2 “(120 cm) | Pedal Gold | |
| Oxford HD Max Chain 150 | 3.58 kg(7.89 lb) | 59.1 “(150 cm) | Pedal Gold | |
| Oxford HD Max Chain 200 | 4.77 kg(10.52 lb) | 78.7 “(200 cm) | Pedal Gold | |
| OKG Noose Chain Lock 80 | 3.9 kg(8.6 lb) | 31.5 “(80 cm) | Pedal Gold | |
| OKG Noose Chain Lock 120 | 5.12 kg(11 lb) | 47.28 “(120 cm) | Pedal Gold | |
| OKG Noose Chain | 3.4 kg / metre(7.5 lb) | 0.8 – 1.5 m | Pedal Gold | |
| Magnum Plus Goliath HLKM102 | 2 kg(4.4 lb) | 43.3 “(110 cm) | Pedal Gold | |
| Milenco Coleraine 12 | 4.96 kg(10.93 lb) | 1 – 1.8 m | Pedal Diamond | |
| Milenco Dundrod 12 | 3.87 kg +(8.53 lb) + | 1 – 1.8 m | Pedal Diamond | |
| Oxford Monster 12 | 5.20 kg +(11.46 lb) + | 1.2 – 2.0 m | Pedal Diamond | |
| Oxford Patriot | 4 kg +(8.82 lb) + | 1.2 – 2.0 m | Pedal Diamond | 4 stars |
These chain bike locks offer very high security, often Sold Secure Gold or Diamond rated, with ART ratings of 3/5 or 4/5. Suitable for motorbikes and e-bikes, they surpass most U-locks in security.
However, even 12mm chains can be cut with 42″ bolt cutters and ground leverage. Maintain elevated locking positions.
The Kryptonite New York Noose [Amazon] is a top 12mm chain bike lock. Its noose design, with a large end link, maximizes usable length, saving weight and bulk.
The Kryptonite New York Noose 1275 chain bike lock, demonstrating its noose system for increased locking length.
The noose design enhances versatility for both portable and home stationary use. See our Kryptonite New York Noose 1275 review for details.
Given the weight of even short 12mm chains, longer versions are best suited for stationary home security. The Kryptonite New York [Amazon] chain lock, with 14mm shackle disc lock and optional anti-theft protection up to $3,500 / £1300, is a good home security choice.
12mm chain bike locks offer excellent high security for both portable and home use if weight is manageable.
Choosing a Stationary Chain Bike Lock
For home security, portability is not a concern. Home bike theft is prevalent, exceeding street theft rates in both the UK and US.
Prioritize maximum security for home chain bike locks. Choose the thickest chain bike lock you can afford for stationary use.
14 mm Chain Bike Locks
14mm chain bike locks are strictly stationary security solutions. Their weight and bulk preclude portable use.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Kryptonite New York Fahgettaboudit Chain 1410 | 4.90 kg(10.80 lb) | 39.0 “(100 cm) | Powered Gold, Pedal Diamond | |
| Kryptonite New York Fahgettaboudit Chain 1415 | 6.92 kg(15.25 lb) | 60.0 “(150 cm) | Powered Gold, Pedal Diamond | |
| Milenco Dundrod Chain Lock | 5.6 kg(12.35 lb) | 39.37 “(100 cm) | Powered Gold, Pedal Diamond | |
| Hiplok XL Noose | 5 kg(11 lb) | 39.0 “(100 cm) | Pedal Diamond | |
| Hiplok DXXL Noose and U-lock | 6.11 kg(13.46 lb) | 39.0 “(100 cm) | Pedal Diamond | |
| Milenco Dundrod 14 | 5.02 kg +(11.07 lb) + | 1 – 1.8 m | Pedal Diamond | |
| OnGuard 8016 Beast | 6.71 kg(14.8 lb) | 43 “(110 cm) | ||
| OnGuard 8016L Beast | 9.98 kg(22 lb) | 72 “(183 cm) |
While occasionally portable for high-risk situations or extended unattended parking, even the lightest 14mm chain bike lock weighs as much as 13 cans of soda.
14mm chain bike locks offer very high security. The Kryptonite New York Fahgettaboudit is both Sold Secure Bicycle Diamond and Motorcycle Gold rated.
14mm chains can be cut by the largest bolt cutters but require expertise, weight, and proper chain positioning. Elevate chain bike locks even in sheds or garages, using wall anchors instead of floor anchors if necessary.
Choice is limited in this security tier. Kryptonite New York Fahgettaboudit chains feature a 15mm double-locking shackle, 10/10 in-house security rating, Sold Secure ratings, and anti-theft protection up to $3,750 / £2000.
OnGuard Beast 8017
The OnGuard Beast chain bike lock, offering high security and often a more affordable option.
OnGuard Beast chains offer a 14mm quadruple-locking shackle, 99/100 in-house security rating, and less reliable anti-theft protection up to $5001. OnGuard is often more affordable than Kryptonite but less pick-resistant with less reliable after-sales support.
The Hiplok DXXL Noose, with its portable U-lock component, remains a top recommendation.
15 mm Chain Bike Locks
15mm chain bike locks are less common. The Kryptonite New York Legend, a top-tier option, is increasingly difficult to find.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Artago Stone 68T100 | 3.39 kg(7.48 lb) | 39.0 “(100 cm) | Powered Gold | |
| Kryptonite New York Legend Chain 1590 | 4.31 kg(9.50 lb) | 36 “(90 cm) | 5 stars | |
| Kryptonite New York Legend Chain 1515 | 7.23 kg(15.95 lb) | 60 “(150 cm) | 5 stars | 5 stars |
15mm chain bike locks are theoretically vulnerable to bolt cutters but extremely resistant. The Kryptonite New York Legend achieves a maximum 5/5 ART rating, ranking among the strongest bike locks available.
The Kryptonite New York Legend 1515 chain bike lock, recognized as one of the most secure options for bicycles.
Featuring a 16mm shrouded, double-locking shackle and anti-theft protection up to $4500 / £2500, the New York Legend is exceptionally secure. See our New York Legend review for details.
The Artago Stone 68T100 is another robust, more readily available 15mm option, although untested by us.
16 mm Chain Bike Locks
16mm chain bike locks are immune to manual bolt cutters, requiring power tools for defeat.
| Model | Weight | Length | Sold Secure rating | ART rating |
|---|---|---|---|---|
| Pragmasis Protector 16 mm | 4.5 kg / metre(9.92 lb) | 0.8 – 6 m | Pedal Diamond | |
| Oxford Nemesis | 6.76 kg(14.9 lb) | 59 “(150 cm) | Powered Gold, Pedal Diamond | |
| Oxford Nemesis | 8.55 kg(18.8 lb) | 78.7 “(200 cm) | Powered Gold, Pedal Diamond | |
| Almax Immobiliser Series III | 4.15 kg(9.15 lb) | 28 “(700 cm) | ||
| Almax Immobiliser Series III | 7.75 kg(17.09 lb) | 60″(150 cm) | ||
| Almax Immobiliser Series III | 10 kg(22.05 lb) | 79 “(200 cm) | ||
| Almax Immobiliser Series III | 12.25 kg(27 lb) | 98 “(250 cm) | ||
| Pragmasis Protector | 5.5 kg(12.13 lb) | 39 “(100 cm) | ||
| Pragmasis Protector | 7.75 kg(17.09 lb) | 60 “(150 cm) | ||
| Pragmasis Protector | 10 kg(22.05 lb) | 79 “(200 cm) | ||
| Pragmasis Protector | 12.25 kg(27 lb) | 98 “(250 cm) | ||
| Squire TC16 5 | 8.44 kg(18.61 lb) | 59 “(150 cm) | Powered Gold |
These chain bike locks are extremely heavy, unsuitable for portability, and require careful handling to avoid bike damage due to their weight.
British brands Pragmasis and Almax, formerly leading 16mm chain producers, are now out of business, limiting options. The Oxford Nemesis is a viable alternative, although untested by us. Consider the 22mm Hiplok Mega Chain for ultimate security, compatible with angle grinder-resistant U-locks and ground anchors.
Best Chain Bike Lock Summary
Chain bike locks fall into two categories: portable and stationary.
Portable Chain Bike Locks
Portable chains have links under 13mm, with even 12mm being very heavy. They are heavier than U-locks but offer advantages:
- Flexibility for securing to diverse objects.
- Seat post or top bar portability.
- Resistance to leverage attacks and angle grinders.
However, portable chain bike lock links can be cut by manual bolt cutters if positioned near the ground. Secure portable chains tightly around the top tube or seat stays, elevating them to deter bolt cutter attacks. Prioritize wheel security separately.
Always check weight before purchasing portable chain bike locks. If weight is a major concern, U-locks are preferable.
Hiplok offers good security-to-weight ratios and wearable portability. For low-risk areas, Seatylock Viking Silver is suitable. For medium risk, Kryptonite Kryptoloks or Abus CityChains are better. For high-risk areas, Kryptonite Evolution Series 4 1055 Mini, Hiplok Gold, or Kryptonite New York Noose are recommended.
Stationary Chain Bike Locks
Stationary chains have links over 13mm, ideal for immobile, overnight security.
- High Security: Resistant to bottle jacks, leverage attacks, angle grinders, and manual bolt cutters (for links >15mm).
- Practicality: Work well with ground anchors for home security and can secure multiple bikes.
Ensure the anchor and securing point are as robust as the chain bike lock. Invest in a good ground anchor and follow proper locking techniques (how to lock your bike properly).
This guide aims to aid in selecting the best chain bike lock. Regularly clean and lubricate your chain bike lock to prevent jamming (how to stop bike lock jamming).
For feedback or questions, please comment below.
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