[Compatibility]It is suitable for 50cc 110cc 125cc 135cc ATVs, Dirt Bikes and Karts with semi-automatic reverse gear engine, Chinese s like TaoTao, Buyang, Coolsport, Lifan Kazuma, SUNL, etc. [High quality materials] Premium iron material quality, sturdy, corrosion resistant and durable, has fast heat dissipation.[Specification]Semi-automatic clutch, 4-1/2″ diameter.[Complete accessories]Includes 1 semi-automatic clutch in a box [Quality guarantee and service]If you have any questions or dissatisfactions about the product, you can contact our customer service at any time, our team will reply to you within 24 hours.Buy them without worries!About After-sales Service: We have support teams friendly and dedicated to handle any problem arising with our products.You would contact us first by email or message for replacement,refund or technical problem.