Milltek Sport Cat-Back Exhaust - 2014-2016 BMW 428i F32 Coupe

This Milltek Sport cat-back exhaust fits the 2014-2016 BMW 428i coupe (F32, rear-wheel drive) with the 2.0 liter N20 turbo four. For the rear-drive 428i coupe, Milltek offers an OE-style twin-outlet cat-back that keeps the factory active exhaust valve, or a 435i-style dual-outlet cat-back with a tip on each side, each non-resonated or resonated, plus optional downpipes. Each system is built for this exact chassis, so it follows the factory routing, hangs from the stock mounts and keeps the ground clearance of the original exhaust. Compared with the factory steel parts it is lighter, flows more freely and gives the engine a clearer, stronger voice under load, without the harsh highway drone of a cheap straight pipe. The BMW 428i F32 parts are T304L stainless steel with mandrel-bent tubing, which keeps the pipe at full size through each bend and resists corrosion for years. It bolts on with the factory hangers and clamps, with no cutting or welding needed. It swaps the factory exhaust from the catalytic converters back, using 76.2 mm (3 in) T304L stainless steel pipework, and bolts to the factory mounting points.

How to Choose

Start with the System. 435i-Style Dual Outlet, Non-Resonated (Louder) adds a tip on each side like the 435i, with a center silencer delete pipe; needs the 435i M Sport rear valance. OE-Style Twin Outlet, Non-Resonated (Louder) keeps the factory twin-outlet look and active exhaust valve, with a center silencer delete pipe for a louder note. 435i-Style Dual Outlet, Resonated (Quieter) adds a tip on each side like the 435i, with a Milltek center silencer; needs the 435i M Sport rear valance. OE-Style Twin Outlet, Resonated (Quieter) keeps the factory twin-outlet look and active exhaust valve, with a Milltek center silencer for a calmer note.

Then pick an Exhaust Tip Finish: Polished GT-90 (bright polished stainless), Cerakote Black GT-90 (a black Cerakote ceramic coating), Brushed Titanium GT-90 (a brushed titanium finish), Polished GT-76 (bright polished stainless), Cerakote Black GT-76 (a black Cerakote ceramic coating). The finish changes the look only, not the sound.

The Add Downpipe option bundles a Milltek downpipe with the cat-back. No Downpipe keeps your factory downpipe. Catless Downpipe adds a catless downpipe (off-road and track use only). Catted Hi-Flow Sports Cat Downpipe adds a large-bore downpipe with a hi-flow sports catalyst (race product, ECU remap needed). You can also buy them on their own from the downpipes for the BMW 428i F32.

Features

• 76.2 mm (3 in) T304L stainless steel pipework
• Mandrel-bent and made to bolt to the factory mounting points
• 5 tip finishes
• Catted and catless options explained in How to Choose

What's Included

• Milltek pipework, rear silencer and outlet pipe for the system you choose
• Tips in the finish you choose
• Mounting bracket

Specifications

Fitment Notes

• Fits the 2014-2016 US-market BMW 428i coupe (F32) with rear-wheel drive and the N20 engine. Milltek lists the cat-backs for manual-gearbox cars without a tow bar; please call us to confirm fitment on automatic cars. Not for 428i xDrive, the Gran Coupe, the Convertible or the 2017 and later 430i.
• The 435i-Style Dual Outlet systems need the 435i M Sport rear valance, available from your BMW dealer. The OE-Style Twin Outlet systems fit the factory 428i valance and keep the active exhaust valve.
• Both downpipe options are Milltek race products that need an ECU remap. The catless downpipe is for off-road or track use only.
• Catless parts remove the catalytic converter. They are sold for off-road and competition use only and are not legal on public roads in the US.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.