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/GRIP DS450/X