R44 BMW F80 M3, F82 M4 & F87 M2 Competition S55 Exhaust Catless Downpipes

The R44 BMW F80 M3, F82 M4 & F87 M2 Competition S55 Exhaust Catless Downpipes are engineered to unlock the full sound and performance potential of BMW’s S55 twin-turbo engine. Manufactured from high-quality stainless steel, this new-design stepped 3.5"–3.0" configuration replaces the highly restrictive OEM catalytic converters, dramatically reducing exhaust back pressure. The result is faster turbo spool, sharper throttle response and a far more aggressive exhaust note, all delivered with precise fitment, proven durability and a sensible price point.

Key Features

• High-grade stainless steel construction

• Catless / decat design for maximum exhaust flow

• New-design stepped 3.5"–3.0" pipe diameter

• Significant reduction in exhaust back pressure

• Faster turbo spool and reduced turbo lag

• Sharper throttle response

• Substantial increase in exhaust volume and presence

• Raises the tuning potential of the S55 engine

• Supplied with a 1 year R44 Performance warranty and fitment guarantee

• Engineered for accurate fitment on S55-powered M models

Important Disclaimer – Motorsport-Use Only

These downpipes are strictly for motorsport-use only. Removal of the OEM catalytic converters breaches European and international emissions regulations and may exceed permitted noise limits in certain countries. Vehicles fitted with these downpipes will fail a UK MOT test.

Fitting catless downpipes will trigger an engine management light and may place the vehicle into limp mode. Custom coding or aftermarket tuning is required to operate these downpipes correctly. R44 strongly advises use limited to closed-course environments such as track or drag strip applications only.

Compatibility

• BMW F80 M3 (2014–2019)

• BMW F82 M4 (2014–2021)

• BMW F87 M2 Competition (2018–2021)

• Engine: S55 3.0-litre twin-turbo inline-six

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.