Finding the right chain and sprocket set can dramatically improve power transfer, acceleration, and reliability for mini bikes, go-karts, and off-road bikes. This guide highlights five top-performing CILOYU and related chain-sprocket kits, covering compatibility, durability, and installation ease to help you pick the best upgrade for your ride.
| Product | Brand | Tooth Count | Chain Type | Compatibility |
|---|---|---|---|---|
| CILOYU 35 Chain Sprocket 40T | CILOYU | 40 | 35 Chain / 420 | Coleman CT100U/CC100X, DB30, MBX10/MBX11, Monster Moto |
| CILOYU 35 Chain Mini Bike Rear Sprocket 40T | CILOYU | 40 | 35 Chain / 420 | Predator 97cc–100cc, Coleman CT100U/CC100X, MBX10/MBX11 |
| CILOYU 420 Chain + 60T Kit | CILOYU | 60 | 420 Chain | Predator 196cc–212cc, Coleman BT200X/CT200U-EX/CT200U |
| CILOYU 60 Tooth Sprocket Kit | CILOYU | 60 | 420 Chain | Predator 196cc–212cc, Coleman BT200X/CT200U-EX |
| FXNX 40T 6-Hole Rear Sprocket | fxnx | 40 | 420 Chain | MBX10/MBX11, CT100U/CC100X, MM-B80/MM-B105 |
style=”max-width: 860px;”>Note: All products listed are designed to improve gear engagement and durability for small displacement engines, ensuring reliable shifting, smoother acceleration, and longer wear life. Check mounting hole count, center-to-center spacing, and bore size to ensure precise fit for your machine.
CILOYU 35 Chain Sprocket 40 Tooth
The 40-tooth rear sprocket is designed for compatibility with several mini bike models including Baja Doodle Bug DB30, Hensim DB30 variants, Motovox MBX10/MBX11, Monster Moto MM-B80/MM-B105, and Coleman CT100U/CC100X. This kit includes six mounting screws and nuts, plus a wrench, supporting a tool-free installation process that can be completed in minutes. The 6-hole mounting pattern and improved hole spacing enhance mounting compatibility and secure fit. The sprocket aims to optimize power transfer and chain stability for both standard and high-speed riding scenarios.
CILOYU 35 Chain Mini Bike Rear Sprocket 40T
Designed for mini bikes and 35 chain systems, this 40T rear sprocket offers broad compatibility with Predator 97cc–100cc models, Coleman CT100U/CC100X, RB100 Trail 100, Baja Motorsports DB30 variants, and MBX10/MBX11. The construction emphasizes durable materials and reliable engagement, supporting both daily riding and more vigorous use of small displacement engines.
CILOYU 420 Chain + 60T Kit
This kit pairs a 420 chain with a 60-tooth rear sprocket and a 90-link chain, designed to fit a wide range of PowerSports mini bikes and go-karts. It lists compatibility with Predator 212, 196cc, Coleman BT200X/CT200U-EX/CT200U, Massimo MB200, TrailMaster MB200, and similar models. The included heavy-duty chain is engineered for high-strength performance, while stainless steel sprockets provide corrosion resistance and long service life in challenging environments.
CILOYU 60 Tooth Sprocket Kit
This 60T rear sprocket and matching 420 chain setup is designed for larger-engine mini bikes and go-karts, including Predator 196cc–212cc classes and Coleman CT200U families. The kit emphasizes a robust, wear-resistant build with a focus on maintaining precise chain alignment to support higher horsepower and quicker acceleration while preserving drivetrain durability.
FXNX 40T 6-Hole Rear Sprocket
FXNX’s 40T rear sprocket features a six-hole mounting pattern designed for compatibility with various mini bike brands, including Motovox MBX10/MBX11, Coleman CT100U/CC100X, Monster Moto MM-B80/MM-B105, and other 212cc-class engines. The sprocket is built for high-speed applications and robust wear resistance, ensuring reliable power transfer across demanding riding conditions.
MRELC Ultimate 420 120 Links Chain & 13T/35T Sprocket Set
This comprehensive drivetrain upgrade includes a 420 chain with 120 links and two stainless steel sprockets: 13T front and 35T rear. It targets a broad range of 50cc to 170cc engines and is compatible with CRF150, YZ80, SSR, Lifan, Coolster, and related platforms. The kit emphasizes durability, corrosion resistance, and precise alignment for smoother power delivery across varied terrains and riding styles.
Buying Guide
Key considerations when choosing a bike chain and sprocket set include engine displacement, intended use (street vs. off-road), and compatibility with your model’s mounting pattern.
- Chain type and length: Verify whether the kit uses 35 or 420 chains, and check the specified link count to match your jackshaft and rear wheel setup.
- Tooth count and gearing: Higher tooth counts boost top speed but may reduce acceleration. Match the sprocket count to your engine’s horsepower and desired riding style.
- Mounting pattern: Ensure the number of mounting holes (commonly six) and hole spacing align with your brake or rear hub configuration.
- Material and durability: Look for alloy steel or stainless steel sprockets and heavy-duty chains for corrosion resistance and long life, especially under high RPMs.
- Installation ease: Kits that include mounting screws, nuts, and a wrench simplify setup and reduce downtime.
- Compatibility scope: Some kits advertise broad compatibility; confirm the model list matches your bike to avoid fitment issues.
When evaluating options, consider the trade-offs between aggressive gearing for faster top speeds and a setup optimized for quicker starts. For riders focusing on off-road durability, prioritize kits with robust materials and proven wear resistance. For enthusiasts seeking quick installations, choose tool-free or hardware-complete kits with clear fitment guidance.