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Pit Bike Front Sprockets & Drive Chain

Front sprockets in 420 and 428 chain pitch for CRF50, XR50, KTM 50, and Chinese pit bikes. Available in 13, 14, and 15 tooth sizes with 17mm and 20mm shaft bore options — match the tooth count and shaft size to your specific bike before ordering. Going up one tooth on the front sprocket raises top speed; going down increases low-end pull.

420 Chain Sprockets

13T — 17mm shaft

13T — 20mm shaft

14T — 17mm shaft

14T — 20mm shaft

15T — 17mm shaft

15T — 20mm shaft

428 Chain Sprockets

15T — 17mm shaft

15T — 20mm shaft

Extended Swingarm Chain

Longer Chain for Extended Swing Arm — Required when fitting an extended swing arm on CRF50 and XR50 hop-up builds.