FMF Racing Factory 4.1 Exhaust - Aluminum/Stainless Steel - 042380

Superior power than stock systems. Available with titanium and stainless steel headers. FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage. Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws. Meet AMA and FIM sound requirements. QuietCore 94 dB insert included. Spark arrestor included in muffler.