The Voodoo High Performance Cafe Exhaust pipes are a great new addition to the VooDoo Exhaust line This exhaust is a 17" Universal Reverse Cone Shorty Megaphone that fits 1.5 and 1.8 inch pipes Single muffler Chrome plated over carbon steel Sound is kept under control using high heat packing Voodoo High Performance Cafe Exhaust are designed for replacement or modification of many classic UJM (Universal Japanese Motorcycle), German, and British bikes Power Commander may be required for proper fuel management