BMW F82 F83 M4 3" PRIMARY DECAT DOWNPIPE

Fits to standard M4 exhaust (Pre-PPF models only) and the Cobra Sport primary cat back exhaust (BM104TP84). Does not fit M4 Competition model. (Requires 2 x BMW gasket - part number 18307851168 - not included). he Cobra Sport catless turbo downpipes produce a deeper exhaust note and allow the turbos to spool quicker for sharper throttle response and power delivery. Matched with a re-map, this part allows for significant power improvements. This BMW M4 performance exhaust is made in 3"/76.2mm bore pipework and replaces the primary catalysts (Cat Bypass). This de-cat sports exhaust is sold for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police road side checks. EML lights may activate after removing the standard primary O/E catalyst. An ECU Re-map is recommended to correct this problem and stabilise all power increases. Requires 2 x BMW gasket - part number 18307851168 - all other relevant gaskets and fittings are supplied.