Airtec Motorsport BMW B58 Catless Downpipe

Airtec Motorsport BMW B58 Catless Downpipe is a direct replacement for the restrictive OEM downpipe with catalytic convertor.

Airtec's B58 Catless downpipe reduces back pressure, resulting in faster response, increased power and a more aggressive exhaust note. Supplied with an adaptor to marry up to the original exhaust system, it also fits aftermarket systems, making it the a perfect solution to replace the OEM downpipe.

Please note: This product is NOT suitable for road use as it does not comply with UK emission standards. For use on track ONLY.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated Race Only and are solely for competition/off road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may be in violation of 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.

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.

- Made from stainless steel
- Airtec laser cut plaque
- Smooth bends to ensure increased flow
- Cast elbow to retain diameter
- Fits original and aftermarket exhaust systems
- Improved performance further enhanced with remap

- BMW F20/F21 M140i Hatchback (2016-2019)
- BMW F22/F23 M240i Coupe/Convertible (2016-2019)
- BMW F30/F31 M340i Saloon/Estate (2016-2019)
- BMW F32/F33/F36 440i Coupe/Convertible/Gran Coupe (2016-2019)
- BMW G30/G31/G38 540i Saloon/Estate (2016+)
- BMW G32 GT 640i Coupe (2017+)
- BMW G12 740i Saloon (2017+)
- BMW G01 X3 M40i (2017+)
- BMW G02 X4 M40i (2017+)

- Airtec Motorsport decat downpipe made from stainless steel

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.