Hot Start Kit FCR Operated Choke Assembly For CRF 450 450X 250R 16019-MEB-671 Moto Carburetor Control Switch This hot start kit includes an FCR operated choke assembly designed for use with motorcycle carburetors.It is compatible with models equipped with the 16019-MEB-671 part number, including CRF450, CRF450X, and CRF250R.The assembly facilitates easier engine starting during warm restarts by controlling the air-fuel mixture.Installation is straightforward, connecting directly to the existing carburetor system.The kit improves throttle response and helps prevent stalling when restarting a warm engine.Designed for in off-road and -performance riding conditions. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.