BMW G20/21 M340i & G22 M440i - OPF Back Exhaust System - Uses OE Trims Model_425D (F36) 2015-17 The free flowing 3” pipework

The free flowing 3” pipework and optimised exhaust technology opens up huge potential for M4 owners looking to increase power whilst also obtaining a pitch perfect exhaust tone"

removing any restriction and its function as a noise-canceling device

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

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

Test Results:

BMW G20/21 M340i & G22 M440i - OPF Back Exhaust System - Uses OE Trims Model_425D (F36) 2015-17 The free flowing 3” pipeworkOur 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