Rocker Arms & Camshafts

Affordable replacement camshafts & rocker arm/camshaft holder assemblies for 50cc-250cc scooters, mopeds, ATVs, go-karts, and pocket bikes — improves valve timing, compression, idle smoothness, or fixes cam wear/noise during rebuilds. Includes high-performance racing camshafts (for 60cc-100cc 139QMB/139QMA; 125cc-150cc 152QMI/157QMJ) and complete rocker arm holder assemblies (with camshaft support for GY6 125cc-150cc QMI152, 161cc, 180cc-250cc QMJ157) — durable steel/aluminum fixes on a budget.

Best fits: GY6 4-stroke 50cc-250cc (139QMB/50cc short, 125cc-150cc 152QMI/157QMJ, 180cc-250cc; TaoTao, SunL, Kazuma, Roketa, Baja, SSR, Coolster scooters/ATVs/go-karts/mopeds), 161cc scooters/mopeds/go-karts, and many Chinese horizontal engines. Most are plug-and-play direct replacements (some assemblies include rocker arms & holder) for quick top-end repairs or mild performance gains!