BMW 4 Series F32 428i Auto - Non-Resonated (Quieter) Cat-Back Exhaust System with Titanium Trims (For 435i M Sport Valance) Model_GT R (2020>) User configurable display via buttons

User configurable display via buttons on the gauge face for changing AFR values

Test Results:

Reduces Detonation (Knock)Water absorbs heat

you can be sure of the positive performance gains it will deliver

Maximises power output by optimising bedding in process

BMW 4 Series F32 428i Auto - Non-Resonated (Quieter) Cat-Back Exhaust System with Titanium Trims (For 435i M Sport Valance) Model_GT R (2020>) User configurable display via buttonsOur 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