CILOYU 35 Chain 140 Links Mini Bike Sprocket 40T — Compatible with Coleman CT100U, CK100, DB30 & More
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Description
xUpgrade your mini bike drive with the CILOYU 35-chain, 140-links kit featuring a 40T rear sprocket. Designed for durability and precision, it helps maintain consistent power delivery across varied terrains without requiring extensive modifications. The combination of a robust alloy and a precision tooth profile supports smoother engagement and fewer slip events during spirited rides.
Wide compatibility
This drive kit is engineered to fit a broad family of micro bikes and go-karts, including Coleman CT100U and CK-series, Motovox MBX models, Monster Moto variants, Baja Motorsports, and several Predator/DB30 styles. The setup accommodates engines from 80cc up to 105cc class, and even certain electric mini bikes.
- Fitment: 35 chain with a 40T rear sprocket aligns with Predator and Coleman mini bikes.
- Broad compatibility: CT100U, CC100X, RB100, Trail 100, CK100, SK100, DB30, MBX10/MBX11, MM-B80, MM-B105, MM-B80 105, and more.
Durable construction and precise fit
Machined from a sturdy metal alloy with a precision tooth design, the sprocket is built for longevity and dependable engagement. The thoughtful tooth geometry helps maintain alignment as you ride and reduces the chance of drops or skip under load.
- Durable alloy construction supports repeated use in diverse riding conditions.
- Six mounting holes with improved spacing enable easier installation and less modification.
Efficient power transmission
Keeping the front sprocket unchanged, the 40T rear sprocket delivers a faster transmission ratio. This setup can contribute to quicker takeoffs, steadier acceleration, and potentially better fuel efficiency, depending on your riding style and terrain.
Technical notes: mounting hole distance is 49 mm, hole diameter is 37 mm, center hole diameter is 37 mm, 40 teeth on a 35-chain system.
In practice, riders report a noticeable improvement in drive responsiveness and the sense of “got it” when climbing grades or navigating loose surfaces. The kit is designed to be a practical upgrade for hobbyists seeking reliable performance without extensive customization.
Please verify your specific model compatibility with the listed fitment before purchase. The kit emphasizes dependable operation and straightforward installation as the core goals, with benefits that are possible rather than guaranteed.
FAQ
Q: Is this sprocket kit compatible with my mini bike?
A: The kit fits many Coleman, Motovox, Monster Moto, Baja Motorsports, and Predator mini bikes when paired with a 35-chain and 40T rear sprocket.
Q: What installation details should I check?
A: Verify mounting hole spacing at 49 mm and hole diameters at 37 mm for a proper, smooth fit.
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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