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Exhaust Muffler / Silencer Rear box (Catalysts Bypass System). Brand: MILLTEK SPORTFits:Porsche 987 Boxster 2004>>Porsche 987C Cayman 2006>>Fits cars with engine size 3.2L & 3.4LProduct Notes:When fitting Catalyst Bypass Assembly the ECU will need a sports re-map to accommodate for the extra air flow.Parts Assembly:- MSPO177 LH Rear Cat Bypass Replacement Silencer - MSPO178 RH Rear Cat Bypass Replacement Silencer - MSPO179 LH Rear Silencer - MSPO180 RH Rear Silencer
