Remus BMW M3/M4 Racing Secondary Cat Back Exhaust System is a high-quality, hand-crafted racing system that runs from the secondary catalytic converter all the way to the tips. This system bypasses the factory OPFs, but leaves both cats in place. The secondary cat-back exhaust removes the resonated mid pipe and features a much more efficient design for better airflow. The backbox has been completely redesigned into a twin silencer setup and when the valves are open, the system becomes completely un-silenced.
Fitting this system is a good compromise between achieving much better airflow and cost. For the full downpipe-back system that removes the secondary cats, click here.
The Racing Rear Silencer offers:
- 6mm larger tube diameter
- Two smaller silencers in the place of the single factory backbox for better airflow.
- No EC type approval - This means the racing system is, generally, not legal for road use in Europe. Should be used for motorsport/track ONLY.
PRODUCT SPECIFICATION
- Aggressive racing sound
- Shot blasted surface, 100% stainless steel
- Performance increase, low back pressure
- Lightweight construction
- Perfect shape and fitment
- Handmade in Austria
- 24 months warranty
- No EC Approval
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+)
WHAT'S IN THE BOX?
- Remus racing rear silencer
- 2x Upgraded 76mm valved connection tubes that utilise the OE valve control system
- 1x Racing front silencer replacement tube
- 1x GPF replacement tube
- Choice of exhaust tips
DISCLAIMER
This item is not intended for use on the public road (track use ONLY) as it does not comply with UK emission standards.
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.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.