R44 BMW F80 M3, F82 M4 & F87 M2 Competition S55 Exhaust 200 Cell Sports Cat Downpipes

The R44 BMW F80 M3, F82 M4 & F87 M2 Competition S55 200 Cell Sports Cat Downpipes are engineered to deliver a strong balance of improved exhaust flow, enhanced sound and controlled refinement for S55-powered M cars. Manufactured from high-quality stainless steel, these downpipes replace the restrictive OEM catalytic converters with high-flow 200 cell sports catalysts, significantly reducing back pressure while retaining more civility than a full catless setup. The result is faster turbo spool, sharper throttle response and a deeper, more purposeful exhaust note, all backed by precise fitment, durability and sensible R44 pricing.

Key Features

• High-grade stainless steel construction

• High-flow 200 cell sports catalytic converters

• Reduced exhaust back pressure versus OEM

• Faster turbo spool and improved throttle response

• Enhanced exhaust tone without excessive harshness

• Increased tuning potential for 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 Recommended

While these downpipes retain sports catalytic converters, fitment may still breach emissions and noise regulations depending on vehicle specification, tuning level and regional legislation. Vehicles fitted with aftermarket sports cat downpipes may fail a UK MOT test.

Installation may trigger an engine management light, and custom coding or aftermarket tuning may be required to ensure correct operation. R44 recommends these downpipes primarily for motorsport-use or closed-course applications and advises customers to check local regulations before installation.

Compatibility

• BMW F80 M3 (2014–2021)

• 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.