Fits 2020–2027 4 Series (G22/G23)

G22 | G23 (2020+) EXHAUSTS

Shop all 6 parts
UK fittingR44 HQ, Wembley
Express deliveryUK & worldwide
Rated 4.7 starsBy our customers

4 Series (G22/G23) Exhaust Systems6 products

6 products
Sort by
Sort by
Save £18.00
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
£341.99GBP £359.99GBP
dAHLer BMW Exhaust Flap/Valve Controller-R44 Performance dAHLer BMW Exhaust Flap/Valve Controller-R44 Performance
daHlerdAHLer BMW Exhaust Flap/Valve Controller
£571.99GBP
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
Save £325.29
Remus BMW M340i/M440i xDrive Axle-Back System (G20/G22)-R44 Performance Remus BMW M340i/M440i xDrive Axle-Back System (G20/G22)-R44 Performance
RemusRemus BMW M340i/M440i xDrive Axle-Back System (G20/G22)
From £1,843.28GBP £2,168.57GBP
Save £26.00
Leib BMW G Series CAN BUS Pro 1 Valve (G42/G20/G22 etc)-R44 Performance Leib BMW G Series CAN BUS Pro 1 Valve (G42/G20/G22 etc)-R44 Performance
LEIB EngineeringLeib BMW G Series CAN BUS Pro 1 Valve (G42/G20/G22 etc)
£493.99GBP £519.99GBP
Save £33.50
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)
£636.49GBP £669.99GBP

4 Series (G22/G23) Exhaust Systems at a glance

Vehicle
2020–2027 BMW 4 Series (G22/G23)
Powertrain
B48 2.0 turbo petrol (420i, 430i), B47 2.0 turbo diesel (420d)
Main parts
exhaust valve controllers and cat-back & valved exhaust systems
Brands
LEIB Engineering, Helical Technology, Remus, daHler
Fitting & delivery
Fitting at R44 HQ, Wembley · UK & worldwide delivery
Parts listed
6 parts for the 4 Series (G22/G23)

BMW 4 Series (G22/G23) exhaust systems, downpipes & mid-pipes

R44 Performance stocks 6 exhaust parts for the 2020–2027 BMW 4 Series (G22/G23). Parts include exhaust valve controllers and cat-back & valved exhaust systems, from brands including LEIB Engineering, Helical Technology, Remus, daHler.

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

4 Series (G22/G23) Exhaust Systems FAQs

What exhaust parts are available for the 4 Series (G22/G23)?

R44 Performance lists 6 exhaust parts for the BMW 4 Series (G22/G23), including exhaust valve controllers and cat-back & valved exhaust systems. Brands include LEIB Engineering, Helical Technology, Remus, daHler, and every part is listed for the 4 Series (G22/G23) – 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 4 Series (G22/G23)?

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 4 Series (G22/G23).