The most advanced variable rate throttle in the world Innovative reel changing system lets you tailor the throttle rate to riding conditions and rider preference Ultra-compact housing with snap-together elbows make it easy to install and change reels New sleek design requires less handlebar space for lever clearance and throttle position Use smaller reels for slower throttle rate and larger reels for faster throttle rate Included cam reel provides progressive throttle response preferred by some riders Unique reel design allows fast reel changes Cable boot keeps dirt and dust out for reliable and smooth operation Billet aluminum inline cable adjusters for easy installation and adjustment Lower section of cables use 5 mm housing with PTFE liner for reduced friction, increased routing flexibility and lighter weight; Upper section of cables use 6 mm housing to provide solid support of adjusters; Simple to install and maintain; Kit includes Rev2 throttle assembly with throttle tube, Motion Pro Revolver black vinyl cables, Motion Pro Roadcontrol grips and Rev2 Street cam reel; Standard interchangeable reels: 35mm, 40mm, 45mm, and 50mm are also included; Designed by Motion Pro