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. Note: This is a race product and is not EMarked. - Completely replaces the OEM exhaust system - Fits from engine block or turbocharger to tailpipes - Removes the catalyst for motorsport use - Pipe diameter: 63.50 mm Specifications: - Pipe Diameter: 63.50 mm - Fitting Time: 2 to 2.5 hours (including removing OE system) - Race Product: Yes - EMarked: No Kit comes with: - Y Piece - MSBM281 - Resonated Cat Bypass Assembly - MSBM283 - Centre Silencer - MSBM284 - Rear Silencer - MSBM285 - Polished OEM+ Exhaust Tip - MSBM286 - Aux Mounting Brackets - MSBM287 Vehicle Compatibility: - 1987-1992 BMW 3 Series E30 M3