Replaces chunky thumb throttle with smooth, easy-to-use twist throttle Includes super tough Motion Pro Titan Throttle TubeĂ– POM pulley with brass bearing for smooth feel and extended wear resistance Smooth painted black finish Light, ultra-compact design maximizes handlebar space Die cast aluminum construction with billet aluminum cover Compatible with Motion Pro DirtControlĂ– V2 and ODI V2 Lock-On grips using cam "C" Fast twist rate opens throttle at 0.526 mm of cable pull per degree of rotation Will pull 50 mm at maximum twist of 95?. THRTTLE KIT YAM RFM660R