FMF Racing Powercore 2 Aluminum Muffler w/Stainless End Cap for Kawasaki KX500 88-04FMF Powercore Silencer Kawasaki KX500 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: Increased