Fits 2019–2024 M135i xDrive (F40)

M135i X DRIVE / M-SPORT (F40) EXHAUSTS

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UK fittingR44 HQ, Wembley
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M135i xDrive (F40) Exhaust Systems13 products

13 products
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Scorpion Exhaust System For BMW M135i xDrive F40 GPF Model Carbon Fibre 114mm Ascari Tailpipes Scorpion Exhaust System For BMW M135i xDrive F40 GPF Model Carbon Fibre 114mm Ascari Tailpipes
Scorpion ExhaustsScorpion GPF Back Exhaust System For BMW F40 M135i xDrive (GPF Model)
From £1,133.31GBP
Scorpion Exhaust Downpipe For BMW M135i xDrive F40 GPF Model Scorpion Exhaust Downpipe For BMW M135i xDrive F40 GPF Model
Scorpion ExhaustsScorpion Exhaust High Flow Sports Cat Downpipe For BMW M135i xDrive F40 (GPF Model)
£843.91GBP
Leib BMW G Series & F Series CAN MIL Delete Module For OPF & Cat Errors
LEIB EngineeringLeib BMW G Series & F Series CAN MIL Delete Module For OPF & Cat Errors
£359.99GBP
Scorpion Exhaust Downpipe For BMW M135i xDrive F40 GPF Model Scorpion Exhaust Downpipe For BMW M135i xDrive F40 GPF Model
Scorpion ExhaustsScorpion Exhaust Decat Downpipe For BMW M135i xDrive F40 GPF Model
£404.01GBP
Scorpion Exhaust GPF Delete For BMW M135i xDrive F40 GPF Model Scorpion Exhaust GPF Delete For BMW M135i xDrive F40 GPF Model
Scorpion ExhaustsScorpion Exhaust GPF Delete Midpipe For BMW M135i xDrive F40 GPF Model
£288.25GBP
Milltek Sport Exhaust Adapter to OE GPF/OPF - MSBM326
Milltek SportMilltek Sport Exhaust Adapter to OE GPF/OPF - MSBM326
£105.16GBP
Milltek GPF Back Exhaust System for BMW M135i X Drive (F40)-R44 Performance Milltek GPF Back Exhaust System for BMW M135i X Drive (F40)-R44 Performance
Milltek SportMilltek GPF Back Exhaust System for BMW M135i X Drive (F40)
From £1,259.47GBP
BMW Helical Exhaust Valve 2.9inch SBS Type EV70532-MX0-33 BMW Helical Exhaust Valve 2.9inch SBS Type EV70532-MX0-33
Helical TechnologyHelical Technology BMW Helical Exhaust Valve 2.9inch SBS Type (Single)
£249.99GBP
Remus BMW M135i/M235i xDrive Axle-Back System (F40/F44)-R44 Performance Remus BMW M135i/M235i xDrive Axle-Back System (F40/F44)-R44 Performance
RemusRemus BMW M135i/M235i xDrive Axle-Back System (F40/F44)
From £921.43GBP
Leib BMW G Series B58 B48 CatOPF Delete With CAN BUS Pro Functions - R44 Performance
LEIB EngineeringLeib BMW M240i/M340i/M440i B58/B48 Cat/OPF Delete Kit With CAN BUS Pro Functions (G42/G20/G22/F40/F44)
£669.99GBP
Remus BMW M135i xDrive None-Resonated Racing Cat-Back Mid-Section (F40)-R44 Performance Remus BMW M135i xDrive None-Resonated Racing Cat-Back Mid-Section (F40)-R44 Performance
RemusRemus BMW M135i xDrive None-Resonated Racing Cat-Back Mid-Section (F40)
£251.78GBP
Genuine BMW Exhaust Clamping Bush (70mm) 18307560780
Genuine BMWGenuine BMW Exhaust Clamping Bush Pipe Sleeve (70mm) 18307560780
£39.36GBP
dAHLer BMW Exhaust Flap/Valve Controller-R44 Performance dAHLer BMW Exhaust Flap/Valve Controller-R44 Performance
daHlerdAHLer BMW Exhaust Flap/Valve Controller
£571.99GBP

M135i xDrive (F40) Exhaust Systems at a glance

Vehicle
2019–2024 BMW M135i xDrive (F40)
Powertrain
B48 2.0-litre turbocharged inline four
Main parts
cat-back & valved exhaust systems, downpipes, mid-pipes and exhaust valve controllers
Brands
Scorpion Exhausts, LEIB Engineering, Milltek Sport, Remus, Genuine BMW, Helical Technology
Fitting & delivery
Fitting at R44 HQ, Wembley · UK & worldwide delivery
Parts listed
13 parts for the M135i xDrive (F40)

BMW M135i xDrive (F40) exhaust systems, downpipes & mid-pipes

R44 Performance stocks 13 exhaust parts for the 2019–2024 BMW M135i xDrive (F40). Parts include cat-back & valved exhaust systems, downpipes, mid-pipes and exhaust valve controllers, from brands including Scorpion Exhausts, LEIB Engineering, Milltek Sport, Remus, Genuine BMW, Helical Technology.

Where you upgrade the exhaust decides what changes. A cat-back or valved rear section mainly changes the sound and look while keeping the car civilised. Mid-pipes replace the centre section and are a popular way to add volume and character. Downpipes replace the section after the turbo and, paired with an ECU tune, have the biggest effect on performance.

Some exhaust parts are sold for off-road and motorsport use only. Check the legality notes on each product, see our off-road and EPA disclaimer, or chat to our team for advice. We fit exhausts at R44 HQ in Wembley and deliver across the UK and worldwide.

Written by the R44 Performance team, Wembley, London

M135i xDrive (F40) Exhaust Systems FAQs

What exhaust parts are available for the M135i xDrive (F40)?

R44 Performance lists 13 exhaust parts for the BMW M135i xDrive (F40), including cat-back & valved exhaust systems, downpipes, mid-pipes and exhaust valve controllers. Brands include Scorpion Exhausts, LEIB Engineering, Milltek Sport, Remus, Genuine BMW, Helical Technology, and every part is listed for the M135i xDrive (F40) – check each product page for body style and model-year fitment.

What's the difference between a cat-back exhaust, mid-pipe and downpipe?

A cat-back or rear (often valved) section mainly changes the sound and look. Mid-pipes replace the centre section and are a popular way to add volume. Downpipes replace the section directly after the turbo(s) and are usually paired with an ECU tune.

Do I need a tune after fitting downpipes to my M135i xDrive (F40)?

In most cases, yes. Downpipes change the exhaust flow the engine sees, so they're normally fitted together with a suitable ECU tune. Check the product description, or ask our team.

Are aftermarket exhausts road legal in the UK?

In the UK, parts that remove a catalytic converter or petrol particulate filter (OPF/GPF), or that break noise limits, are not road legal and are sold for off-road and motorsport use only – this includes many de-cat downpipes and mid-pipes that delete a secondary catalyst. You're responsible for making sure parts are legal for how you use your car. See our off-road and EPA disclaimer, or ask our team before you buy.

Will a louder exhaust drone on the motorway?

Valved systems let you close the valves for quiet cruising, and many systems are designed to reduce drone at motorway speeds. Product pages describe each system's character – our team can help you choose one that suits how you use your M135i xDrive (F40).