FMF Racing Powercore Muffler for Kawasaki KDX200 89-94/KX250 88-89FMF Powercore Silencer Kawasaki KX250 KDX200 The original FMF Power Core is a lightweight and compact silencer constructed of an extruded aluminum canister with nickel plated stinger and end cap. It was designed to save weight and increase throttle response throughout the entire rpm range. If you have been searching for a quality replacement pipe that delivers both a factory look and sound, the FMF Power Core Silencer fits the bill. Features: