YOXUFA 40T 40/41/420 Chain Sprocket, 40mm Bore — 4-Bolt Mount for Coleman BT200X CT200U and More
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Description
xUpgrade your mini bike drive with the YOXUFA 40T sprocket
This 40-tooth rear sprocket is designed to align with 420 chain systems, delivering a reliable and responsive upgrade for select mini bikes and go-karts. The part features a precise 40 mm center bore and an 80 mm bolt-circle pattern, enabling a secure fit on compatible hubs while maintaining a compact, tidy drive footprint. Built with durability in mind, it’s engineered to withstand everyday riding and occasional rough terrain, so you can enjoy consistent chain engagement across miles of dirt and pavement.
Compatibility and mounting
- Compatible with Coleman BT200X, CT200U, CT200U-EX, CT200U-EXR, Baja Warrior, TrailMaster MB200, Massimo MB200, Axis M200, and Coleman KT196 go-karts that use a 4-bolt, 80 mm pattern.
- Note: This sprocket uses a 4-bolt mounting pattern, not a 3-hole setup. Please verify your hub pattern before purchasing.
What you get and how it helps
- Potential top-speed boost relative to a higher-tooth original, with the 40-tooth design optimized for 420 chain systems.
- Lower cruising RPM can reduce engine load and vibration, which may contribute to a smoother ride on longer sessions.
- Durable construction together with a precise pitch match helps maintain consistent chain engagement and reduces the risk of the chain coming off during use.
Key specs at a glance
- Teeth: 40; Chain compatibility: 420; Overall diameter: 6.5 inches; Center bore: 40 mm; Bolt-circle diameter: 80 mm.
- Note: Not compatible with #35 chain or non-420 configurations.
Real-world use: On weekend trail runs, on-track sessions, or backyard projects, this sprocket aims to deliver a dependable upgrade path. It’s designed to pair with existing 420 chains and a 4-bolt hub, making installation straightforward for those upgrading worn components. While individual results vary, riders may notice crisper engagement, a steadier pull in top gear, and a quieter, more controlled feel during sustained cruising.
Installation and maintenance tips
Before buying, confirm your rear sprocket’s mounting pattern and chain type. Once installed, check alignment and chain tension at regular intervals to preserve performance and safety. Use appropriate fasteners and torque settings recommended for your hub to ensure a solid, lasting fit.
FAQ
Q: Which models is this sprocket compatible with?
A: Compatible with Coleman BT200X, CT200U, CT200U-EX, CT200U-EXR, Baja Warrior, TrailMaster MB200, Massimo MB200, Axis M200, and Coleman KT196 go-karts with a 4-bolt pattern.
Q: What installation notes and performance should I expect?
A: Requires a 4-bolt 80 mm bolt circle and 40 mm center bore; a 40-tooth design can raise top speed potential and may lower cruising RPM, depending on setup.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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