Gravity Performance decats instantly increase power by allowing exhaust gasses to exit the vehicle quicker. Our decats are designed to be direct replacements for the OEM catalytic converter, ensuring smooth installation every time. ---Manufactured from highest quality T304 grade stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing catalyst replacement to get the most from the B58 engine ---Designed to improve power and torque across the entire RPM range ---Sold for off road and track use only Fitment ---BMW 1 Series M140i B58 2015+ models ---BMW 2 Series M240i B58 2015+ models ---BMW 3 Series 340i B58 2015+ models ---BMW 4 Series 440i B58 2015+ models ---BMW 5 Series 540i B58 2015+ models ---BMW 6 Series 640i B58 2015+ models ---BMW 7 Series 740Li B58 2015+ models.
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