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"

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

independent testing has revealed that the 3” Turbo back upgrade with a re-map produces over a 20% increase in BHP

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

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

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