BMW G20/21 M340i & G22 M440i - OPF Back Exhaust System - Uses OE Trims Model_425D (F36) 2015-17 000 RPM: Normal mode: 93dB

000 RPM: Normal mode: 93dB / Sport mode: 100dB

Sound example of the closely related BMW 435D Exhaust (Quad Exit Rear Exhaust)

This dramatic improvement in injector technology is coupled with a new WMI pump design that is 100% waterproof

7bhp ’46 degrees is a close limit before ECU starts retarding timing to keep the engine safe

including a synergistic blend of three esters combined with the latest additive technology for maximum performance

BMW G20/21 M340i & G22 M440i - OPF Back Exhaust System - Uses OE Trims Model_425D (F36) 2015-17 000 RPM: Normal mode: 93dBOur range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our products are made from 304L Aircraft Grade stainless steel. This quality material will ensure that your Cat Back system