Direct-fit 3 inch valved cat back for the BMW M4 F82 Coupe. Full stainless steel, H-pipe layout, OEM valve integration - no coding or remapping needed.
Retains factory drive mode control: Comfort, Sport and Sport+ exhaust tones switch seamlessly
Includes secondary de-cat (cat bypass) - for off-road/motorsport use only; not MOT legal
Supplied with all gaskets and fittings except BMW gasket 18307851168 (x2)
Rolling road verified gains: +21.25bhp and +9.2lb-ft torque
