More durable: The rear drive pulley assembly is made of high-quality steel alloy material, which is resistant to high temperatures and can be used for a long time. More durable: The rear drive pulley assembly is made of high-quality steel alloy material, which is resistant to high temperatures and can be used for a long time. Clutch Assembly fits: Compatible with most Chinese GY6 250cc go karts & scooters 16T spline. Clutch Driven Pully Rear Assembly: is Made of high grade steel alloy material, high temperature and resistance for long time use. Application: Suitable for most Chinese GY6 250cc karts and scooters with 16T splines. This will be your best purchase option. Original specifications: The rear drive pulley assembly is based on the original factory specifications, directly replacing the old or damaged ones. The rear drive pulley assembly has exquisite workmanship, stable performance and high reliability. Product Description Specification: Condition: 100% Brand New Item Ty