RadiusCX is a top-of-the-line auto clutch product that brings together all of Rekluse*s latest technology into one package, TorqDrive friction disk technology coupled with EXP and Core technology results in significant advancement in auto performance with exceptional hook-up, lever feel and durability, Take off and stop in gear without using clutch lever, Centrifugally activated technology automatically prevents engine stalls, Cruise through traffic like you*re on the open road * You don*t have to hold the clutch in at red lights or in heavy traffic anymore, Effortless low-speed maneuverability, Increase in torque capacity for reduced wear, reduced heat and increased power transfer capability, Standard clutch lever function with full override, Shifting transmission remains unchanged (clutch lever use is recommended for shifting), No modification to stock components, Made in the U.S.A