Die cast aluminum construction with billet aluminum cover POM pulley with brass bearing for smooth feel and extended wear resistance Smooth painted black finish Perfect twist ratio for off road motorcycles and ATVs Fits 7/8รถ (22 mm) bars Opens 20 - 38 mm carburetors Comes complete with cable adjuster and dust boot Includes nylon throttle tube with pop out end cap Special application Motion Pro cables available for use on many other bikes Maximum twist 120? / maximum travel 52 mm. THROTTLE TURBO SE