FMF 4.1 Carbon Fiber Exhaust System: * New 4.1C design is FMF's most progressive development in high performance exhaust system yet, now with carbon fiber silencer * Constructed of military grade titanium * Complete front to back system using performance matched components specifically designed for each model * 450cc bikes use a new forward design headpipe to lower the center of gravity and shift the muffler forward to keep it from extending past the rear fender * Spark arrestor end cap available as an option * Includes a Powerbomb header, custom matched mid pipe, new oval carbon silencer and washplug