Sprockets

Affordable replacement front sprockets & retainers for 50cc-160cc dirt bikes, pit bikes, mini bikes, ATVs, quads, go-karts, scooters, and Chinese motorcycles. Stock includes 420 and 428 chain front sprockets (10T–19T teeth, 17mm or 20mm bore) plus sprocket retainer plates with bolts — durable steel fixes for worn teeth, slipping chain, poor acceleration, or shaft mounting issues on a budget.

Best fits: Horizontal engines 50cc–160cc (most common 50cc–125cc/140cc), TaoTao, SSR, Coolster, Baja, Kazuma, and many Chinese pit bikes/ATVs/go-karts/dune buggies. Most are plug-and-play direct replacements (with holder/bolts on select models) for quick chain drive repairs or gear ratio tweaks!