Stepped headpipes 1-3/4'' into 1-7/8'' designed for maximum horsepower & torqueUtilizes an advanced inner collector for maximum performanceUpswept Super Bike 4'' stainless muffler body with aluminum end cap and a new removable conical performance baffle delivers an all new aggressive exhaust soundStainless steel construction with a stainless steel finishHand TIG weldedIncludes 18mm O2 bungs for tuning, 12mm adapters and plugsFull coverage stainless heat shields for the front and rear pipes includedRemovable baffleMade in the U.S.A.