BMW B58 Super 5" CERAMIC COATED Sports Cat Downpipe (F Series M140i, M240i, 340i & 440i)

Unlock the full potential of your BMW B58 engine with the Super 5" Ceramic Coated Sports Cat Downpipe – engineered for F Series models including the M140i, M240i, 340i, and 440i. This premium downpipe features a massive 5" construction for maximum exhaust flow, improved turbo response, and enhanced performance, all while maintaining emissions compliance with a high-flow 200-cell sports catalyst.

The advanced ceramic coating not only offers a sleek, heat-resistant finish but also significantly reduces under-bonnet temperatures for improved thermal efficiency. Precision-built for a direct fit, this high-quality upgrade is perfect for drivers seeking reliable power gains without compromising durability or daily drivability.

Key Features:

• Large-bore 5" diameter for optimal exhaust flow
• High-flow 200-cell sports catalytic converter
• Heat-resistant ceramic coating for improved thermal efficiency
• Enhanced turbo spool and throttle response
• TIG-welded for strength and longevity
• Direct-fit design for straightforward installation
• Maintains emissions compliance for road use

Compatibility:

Fits BMW F Series models with the B58 Gen1 engine, including:

• BMW F20 M140i
• BMW F21 M140i
• BMW F22 M240i
• BMW F30 340i
• BMW F31 340i
• BMW F32 440i
• BMW F33 440i
• BMW F36 440i Gran Coupe

Ideal for tuned or performance-oriented setups, this downpipe is a must-have upgrade for drivers looking to extract more power and sound from their B58-powered BMW.

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.