R44 S58 Catless Downpipes For BMW G80/G81 M3, G82/G83 M4 & G87 M2

The R44 S58 Catless Downpipes are engineered to unlock the true performance and sound potential of BMW’s S58 engine, as found in the latest generation M cars. Designed for the BMW G80 M3, BMW G81 M3 Touring, BMW G82 M4, BMW G83 M4 Convertible and BMW G87 M2, these downpipes eliminate the highly restrictive factory catalytic converters to dramatically reduce exhaust backpressure. The result is faster turbo spool, improved power delivery through the low and mid-range, and a noticeably more aggressive exhaust note.

Each downpipe is handcrafted from TIG-welded 304-grade stainless steel and features CNC precision-machined flanges, also produced from billet 304 stainless steel, to ensure durability and accurate fitment. Smooth radius bends are used throughout the design to minimise turbulence and maximise exhaust gas flow, delivering a lighter and more efficient alternative to the factory system.

Product Specification

• Handcrafted, TIG-welded 304-grade stainless steel construction

• CNC precision-machined flanges from billet 304 stainless steel

• Smooth radius bends for improved exhaust flow

• Catless design to eliminate factory exhaust restriction

• Fitment guarantee

• 1-year warranty

Key Features

• Lighter weight than the factory downpipe

• Significantly reduced exhaust backpressure

• Faster turbo spool

• Increased low-end and mid-range power

• More aggressive and engaging exhaust sound

Compatibility

• BMW G80 M3 Saloon (2021+)

• BMW G80 M3 Competition Saloon (2021+)

• BMW G81 M3 Touring (2023+)

• BMW G81 M3 Competition Touring (2023+)

• BMW G82 M4 Coupe (2021+)

• BMW G82 M4 Competition Coupe (2021+)

• BMW G83 M4 Convertible (2021+)

• BMW G83 M4 Competition Convertible (2021+)

• BMW G87 M2 Coupe (2023+)

Designed specifically for S58-powered BMW M models, the R44 catless downpipes deliver a high-quality, precision-engineered upgrade for owners looking to maximise performance and exhaust presence from their G8X and G87 platforms.

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.