MIlltek Cat-back Valved System - BMW M5 (F10) M4 (F82 / F83) overflow: hidden

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Connection to the turbo downpipe diameter 118mm

The end result is a 35d which is significantly faster to accelerate and smoother to drive while at the same time returning 10-15% improved fuel economy

2 bushes are required

The duct follows the same lines as the stock headlamp and features two carbon air guides

MIlltek Cat-back Valved System - BMW M5 (F10) M4 (F82 / F83) overflow: hiddenValved System Reuses OE Valve Motor Our 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