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The calculated ratio between the inner and outer cooling surface generates a maximum heat transfer and allows at the same time enough air flow for the surrounding components (for example the engine water cooler) for its own heat exchange
For LCI models new OE downpipe clamps and brackets will be required for this pack to fit
BMW M850i xDrive Coupe (2019-2022)
150 rpm and torque increases of 15
Sold as a Complete Set with Left and Right Charge-Air Coolers + Installation Hardware
Milltek Large-bore Downpipe and De-cat - BMW 3 Series G20 | G21 M340i S3 (8V) The calculated ratio between theNOT ROAD LEGAL Fits to Milltek Sport and OE Cat Back Systems Requires Stage 2 ECU Remap 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