RDLN Racing Clutch w/ Adjustable Driven Pulley; 139QMB

RDLN's Racing Clutch with Adjustable Sheave Driven Pulley kit significantly improves the performance of your 50cc 139QMB GY6 stock clutch, giving you smooth, reliable, and rapid clutch engagement during acceleration. Benefits: Cross-drilled holes and tapered vents on the outer drive face significantly enhance heat dissipation The clutch shoe comes with reinforced friction plates and 1500rpm clutch springs, ensuring rapid and reliable engagement during acceleration The adjustable clutch sheave lets you customize the acceleration profile to match your riding style. Specifications: Clutch Spring Tension: 1500rpm Clutch Bell Inner Diameter: 107mm Clutch Bell Outer Diameter: 117mm Number of Clutch Bell Splines: 22 Clutch Bell Splines Inner Diameter: 11.2mm (peak to peak) Clutch Shoe Inner Diameter (flat side to flat side): 24mm Clutch Shoe Inner Diameter (round side to round side): 28mm Clutch Shoe Overall Outer Diameter: 105mm Clutch Shoe Overall Height: 30mm Clutch Sheave: 118mm Compatibility: This product fits 50cc 139QMB engines and those with the following codes. 139QMB-based 50cc / 80cc engines with the following engine codes: 139QMA 139QMB 1P39QMB 1P39QMA-2 YN139QMB JJ1P39QMB 139FMA-2 BD1P39QMB BN139QMB 147QMD Other QMA models Other QMB models Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle. About RDLN: RDLN is a premier line of aftermarket performance upgrade systems and components for scooters. RDLN products are engineered to significantly improve the function, performance, and reliability of your vehicle with the ultimate goal being an optimal balance of price, power, and performance. RDLN’s extensive field-testing network ensures each product exceeds customer requirements and expectations every time. RDLN delivers full-throttle performance at uncompromised quality. Made in Taiwan. This product is intended for off-road use only. This product is not intended for use on public roads or land. This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing. *Performance upgrades are considered racing parts and are not covered by warranty.