Kooks 22+ Raptor R 5.2L 4V. 3in. SS H.O. GREEN Catted Connection Pipes (Connects to OEM) - 13723400 fits_2015-`BMW`M3 and max gains of 22

and max gains of 22 hp and 24 lb-ft of torque to the crank

Flows 20% better than stock

TQ Over Optional Factory Performance Exhaust

545i 2005-2004

Lowers AIT by 12

Kooks 22+ Raptor R 5.2L 4V. 3in. SS H.O. GREEN Catted Connection Pipes (Connects to OEM) - 13723400 fits_2015-`BMW`M3 and max gains of 22Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud