The Milltek Sport full system completely replaces the OEM exhaust system. It fits the vehicle from the engine block or turbocharger to the tailpipes of the exhaust system. This full system removes the catalyst and replaces it with a straight-through pipe, intended for motorsport purposes only. - Completely replaces the OEM exhaust system - Fits from engine block or turbocharger to tailpipes - Removes catalyst and uses a straight-through pipe - Intended for motorsport use only Specifications: - Pipe Diameter: 63.50 - Installation Time: 2 to 2.5 hours (including removing OE system) - Race Product: Yes - EMarked: No Kit comes with: - Y Piece - MSBM281 - Cat Bypass Assembly - MSBM282REP - Centre Silencer - MSBM284 - Rear Silencer - MSBM285 - Polished OEM+ Exhaust Tip - MSBM286 - Aux Mounting Brackets Vehicle Compatibility: - BMW 3 Series E30 M3 1987-1992