Billet manual idle tuner for Kawasaki SXR 1500 engines running an aftermarket big cam that can make the idle erratic. This replaces the stock AIC stepper motor on the throttle body and makes it manually adjustable and locked in place. Uses the stock rubber square ring to seal to the throttle body. Includes new stainless mounting hardware. Fits all STX-12F / STX-15F / Ultra LX / Ultra250X / SXR Jet Skis.