R44 BMW F97 X3M & F98 X4M Pre-LCI S58 Exhaust Catless Downpipes (2019-2021)

The R44 BMW F97 X3M & F98 X4M S58 Exhaust Catless Downpipes are engineered to provide a high-quality, great-value upgrade for owners and tuners looking to unlock the full sound and performance potential of BMW’s S58 twin-turbo engine. Manufactured from durable stainless steel, these downpipes replace the highly restrictive OEM catalytic converters, significantly improving exhaust flow while delivering a far more aggressive exhaust note. Featuring a stepped 3.5"–3.0" diameter design with an integrated heat shield, they offer excellent thermal control, durability and precise fitment, all while keeping pricing sensible and accessible.

Key Features

• High-grade stainless steel construction

• Catless / decat design for maximum exhaust flow

• Stepped 3.5"–3.0" pipe diameter

• Integrated heat shield for improved thermal management

• Major reduction in exhaust back pressure

• Faster turbo spool and reduced turbo lag

• Sharper throttle response and increased exhaust volume

• Raises the tuning potential of the S58 engine

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

• Engineered for accurate fitment on F97 X3M and F98 X4M 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 can place your 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 F97 X3M & X3M Competition (2019-2021)

• BMW F98 X4M & X4M Competition (2019-2021)

• Engine: S58 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.