Upgrading or maintaining your Baja mini bike, particularly models like the Warrior and Heat, often brings up questions about parts compatibility. One of the most common inquiries revolves around chain size, especially when considering performance upgrades like installing a Torque-A-Verter (TAV). If you’re scratching your head wondering whether you need a #35, #40, or something else entirely for your Baja mini bike chain, you’ve come to the right place. Let’s clear up the confusion and guide you to the correct chain size for your ride.
Understanding the Stock Chain Size on Baja Warrior and Heat Mini Bikes
When it comes to Baja mini bikes straight from the factory, specifically the Warrior and Heat models, the consensus among enthusiasts and experienced riders is that they are equipped with a #420 chain. This is the standard chain size that you’ll typically find on these bikes. Knowing this is your starting point before considering any modifications or replacements.
Can You Use #40 or #41 Chains on a Baja Mini Bike?
The discussion often includes mentions of #40 and #41 chains, leading to potential confusion. It’s true that #40 and #41 chains have the same pitch as a #420 chain, which is 1/2 inch. The key difference lies in the thickness of the chain and sprocket.
- #41 Sprocket: Approximately 1/4 inch thick.
- #40 Sprocket: Around 5/16 inch thick.
- #420 Sprocket: Roughly 3/8 inch thick.
While #40 and #41 chains can technically work with a #420 sprocket in a pinch, it’s not the ideal setup. Experts recommend sticking with the #420 chain for Baja mini bikes because the sprockets and drive systems are designed for this specific size.
Upgrading to a Comet TAV and Chain Size Considerations
Many Baja mini bike owners look to upgrade their ride’s performance by installing a Comet Torque-A-Verter (TAV). A TAV system improves low-end torque and overall acceleration, making your mini bike more responsive and fun to ride. When upgrading to a TAV, the good news is that for Baja Warrior and Heat models, a 40/41 style TAV is generally recommended, and it is compatible with your stock #420 chain.
However, some riders might consider using a #40 or #41 chain with their TAV system. While technically feasible, sticking with the #420 chain offers several advantages:
- Strength and Durability: #420 chains generally have a higher tensile strength rating compared to #40 or #41 chains, making them more durable for the demands of mini bike riding.
- Wider Availability: #420 chains are widely available, with numerous options including heavy-duty (HD) and O-ring chains for enhanced performance and longevity. You’ll find a vast selection of #420 chains online, including on platforms like eBay, making it easy to source replacements or upgrades.
Conclusion: Sticking with #420 for Your Baja Mini Bike
For Baja Warrior and Heat mini bikes, the #420 chain is the factory-recommended and generally preferred size. When upgrading to a Comet TAV, a 40/41 style TAV will work with your existing #420 chain, simplifying the upgrade process. While #40 or #41 chains might be used in some cases, #420 offers better durability and a wider range of options for performance upgrades.
Before making any changes, always double-check your specific Baja mini bike model and consider consulting with mini bike parts experts to ensure compatibility and optimal performance. Keeping your chain properly maintained is also crucial for the longevity and reliability of your mini bike, regardless of the size you choose.
