Answering buyers seeking reliable front sprockets for Chinese ATVs, this guide highlights five strong options. These front sprockets fit commonly used 420 and 428 chains and are designed for 50cc–190cc ATVs, mini bikes, go-karts, and dirt bikes. The selections emphasize compatibility with popular brands like TaoTao, Roketa, Sunl, Lifan, Loncin, and Zongshen. Ideal buyers include DIY enthusiasts, riders upgrading drive systems, and shop owners needing dependable replacements. A concise buying table follows, listing core details to compare at a glance.
| Product | Chain Type | Front Sprocket Teeth | Inner Diameter | Brand / Model |
|---|---|---|---|---|
| CQSPMOTO 420-13T Front Sprocket | 420 | 13 | 17 mm | CQSPMOTO Store |
| Saihisday 428 12T Front Sprocket | 428 | 12 | 17 mm | Saihisday |
| CQSPMOTO 420-12T Front Sprocket | 420 | 12 | 17 mm | CQSPMOTO Store |
| 428 Front Rear Sprocket 37T | 428 | 37 | — | Unknown Brand |
| 428-16T Front Engine Sprocket Kit | 428 | 16 | 17 mm | Unlabeled Kit |
CQSPMOTO 420-13T Front Sprocket
Best for: Riders with 420-chain setups on 50cc–140cc Chinese ATVs, dirt bikes, or go-karts who want a precise 13-tooth option. This sprocket includes a retainer plate clip and two bolts for quick installation, ensuring a secure fit with a 30 mm bolt-hole spacing and a 6 mm thickness. It is compatible with TaoTao, Roketa, Sinnis Terrain, Coolster, Sunl, Lifan, Loncin, Jialing, Zongshen, and other Chinese brands. Limitation: Requires a matching 420 chain; verify bore and bolt spacing before ordering.
Saihisday 428 Chain Sprocket 12T Front
Best for: Owners of 50cc–160cc ATVs and dirt bikes using a 428 chain who want a quick, no-adapter install in about 30 minutes. The 17 mm inner diameter matches common Chinese models such as TaoTao and Roketa. Caution: Ensure gear ratio compatibility with your current sprocket to avoid over-tension or misalignment.
CQSPMOTO 420-12T Front Sprocket
Best for: Those seeking a slightly lower tooth count for easier acceleration on 50cc–140cc Chinese ATVs and small go-karts with a 420 chain. It includes a retainer plate clip and bolts for straightforward installation. Limitation: Only fits 420 chains; confirm your chain size and bore before purchasing.
428 Chain 37 Tooth Rear Sprocket
Best for: Users upgrading rear drive on Chinese ATVs when a larger rear sprocket is needed to adjust final drive ratio. This is a rear sprocket; use in combination with a compatible 428 chain. Limitation: Not a front sprocket; consider overall gear ratio impact and chain compatibility.
428-16T Front Engine Sprocket Kit
Best for: Riders needing an all-in-one kit with 16-tooth front sprocket, 17 mm shaft fit, and 30 mm bolt-hole spacing for 428-chain systems. Choose this if you want a straightforward upgrade path with included mounting hardware. Caution: Verify model compatibility and the included hardware’s fit for your specific ATV or dirt bike model.
Buying Guide
- What chain size do you use? Front sprockets are typically designed for either 420 or 428 chains. Match your chain size exactly to avoid fitment issues.
- What is the motor displacement and drive ratio? A tooth count change affects acceleration and top speed. Lower tooth counts increase acceleration; higher counts improve top-end speed but require more torque.
- Is the bore size compatible? Most front sprockets for Chinese ATVs use a 17 mm inner diameter. Check bore and bolt-hole spacing (commonly 30 mm) before ordering.
- Are mounting hardware included? Some kits come with bolts and retainers; others require separate purchases. Confirm what your kit includes.
- Brand compatibility matters. While many Chinese brands share standard sizes, verify model compatibility (TaoTao, Roketa, Sunl, Lifan, Loncin, Zongshen, etc.).
- Installation time and effort? Front sprockets with quick-release retainer plates reduce installation time. Expect roughly 30 minutes for a straightforward swap.
FAQ
- What is the difference between 420 and 428 sprockets? They refer to chain pitch; 420 uses a thinner chain than 428. Ensure your chain matches the sprocket type.
- Can I mix sprocket sizes from different brands? Compatibility is more about chain size and bore than brand; mixing is possible if sizes match, but verify bolt-hole spacing and alignment with the chain line.
- How do I know if a front sprocket is the correct size for my ATV? Check your current sprocket’s number of teeth, chain size, inner bore, and bolt-hole spacing. Compare to product specs.
- Do these sprockets affect engine wear? Proper fit and alignment minimize wear. Avoid installing undersized or misaligned sprockets, which can stress the chain and engine components.
- Are installation tools required beyond standard wrenches? Most kits include necessary bolts or retainers; otherwise, standard metric wrenches are sufficient for common ATV setups.
- Will these fit non-Chinese brands? Some may, but verify chain pitch, bore size, and mounting spacing to avoid a poor fit.