Pingel Air Shifters are unquestionably the finest air shifters on the market today. Our complete kits come with all the necessary components including easy to follow step-by-step instructions. Pingel Air Shifters are available in Super kit form for import motorcycles and the H-D V-Rod, Premium kit form for Harley-Davidson Big Twins, Sportsters, and Buell motorcycles, Air only kits for the serious racer and Electric over Air for the street/strip racer. DOT approved bottles are required for NHRA sanctioned events. All kits include a 2” throw cylinder unless a 3” throw cylinder is specified in the description.