Active Autowerke BMW M3/M4 Non-Equal Length Exhaust Midpipe (F80/F82/F83)

Active Autowerke exhaust mid-pipe for the BMW F80 M3 and F82 M4. The standard Active Autowerke Mid Pipe was specifically designed to eliminate the highly restrictive nature of the S55's factory exhaust system – thus creating optimal exhaust flow and drastically improving performance. Engineered for an exact fit on the BMW F80 M3 and F82 M4, the difference in power and throttle response with this mid-pipe will be noticeable the moment it is installed! Although it doesn't achieve the same sonorous exhaust note you get from the Active Autowerke equal-length mid-pipe, this setup is more cost-effective and still reduces back pressure for better performance.

PRODUCT SPECIFICATION

- 18+ WHP over stock*
- 30+ LB-FT over stock*
- Improved performance from less back pressure
- Deeper & throatier exhaust note
- Less restrictive, more free-flowing
- Lighter weight than the factory system
- Quicker turbo spool
- Increased low-end and mid-range power
- The single-pipe design eliminates cheap “weed-eater” sound from factory exhaust

COMPATIBILITY

- BMW F80 M3 Saloon (2014-2018)
- BMW F82 M4 Coupe (2014-2020)
- BMW F83 M4 Convertible (2014-2020)

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.