R3 Racing Laser Chain Wheel Aligner - 4mm Thick Sprocket

A very simple yet effective method of aligning chain sprockets this device clips into the rear sprocket and a laser beam pinpoints the exactly the centre of the engine sprocket. It's that easy, no more rulers or straight edges and judging by eye. You'll wonder how you managed without one.Quick and easy to useAccurately aligns front and rear sprocketsOptions available to cover most types of kart sprocketOption for 4mm thick sprockets is suitable for 219 sprockets used on Rotax, TKM, Cadet, Bambino, KF and Prokarts. Option for 7mm sprockets is suitable for 428 sprockets commonly found on shifter karts.