REMUS Exhausts Now Available **NEW PRODUCT**

Mike @ XPH

Platinum Vendor
Nov 18, 2016
Las Vegas
Axle back



RACING Secondary-Cat-Back-System, NO (EEC-) APPROVAL
SKU: 081021 1510-2

ATTENTION: RACING - No ECE type approval! RACING Secondary-Cat-Back-System for BMW M3/G80 M4/G82 & M3/G80 M4/G82 Competition, Typ(e) G234M (with and without GPF).
consisting of RACING sport exhaust centered, connection tube package with valves, racing GPF-replacement tube (front silencer replacement tube 081021 1300 included) resp. front silencer replacement tube (US vehicles, without GPF) and one of five tail pipe sets.

Connection tube with spherical connection for mounting of the sport exhaust with integrated valves. Installation/fitting at the serial mounting points. The activation of the valves is carried out using the original actuators via the vehicle onboard electronics.

Tube diameter:
Original tube Ø 70 mm
REMUS tube Ø 76 mm

The original exhaust will need to be cut!
The use of racing products and products which do not have EC approval is generally not permitted on public roads. When fitting REMUS sports silencers, cat-back systems and cat replacement pipes designed for use on closed tracks, it is advantageous to carry out an ECU remapping, in order to exploit the optimum performance of the exhaust system and to prevent the check engine from lighting up.


Aggressive racing sound
Shot blasted surface, 100% stainless steel
Performance increase, low back pressure
Light weight construction
Perfect shape and fitment
Handmade in Austria
24 months warranty



Make your M3/M4 sound like an actual M car.
Stay ahead of the competition with increased power.
Turn heads with an aggressive sound that no one can ignore.


Performance Gains: +9.7 HP @2890rpm | +14 ft-lb @2300rpm
12.56 lbs lighter than factory cat-back back section
5 unique tip options
Retains factory valve system
Shot blasted surface 100% stainless steel
Light weight construction
3 year/unlimited mile warranty


2021+ BMW G80 M3
2021+ BMW G80 M3 Competition
2021+ BMW G82 M4
2021+ BMW G82 M4 Competition

Application Notes:

Uses original factory valve actuators
Requires exhaust to be cut upon installation
Deletes both factory resonators
50 State Emissions Legal: This part is not an Emissions-related part and therefore can be used on Emission Controlled Vehicles.


Your G8X M3/M4 wasn't meant to be a quiet and subtle grocery getter, so why leave it sounding like one? We know that BMW has standards to meet and rules to follow, but that often means your performance machine comes up a little lacking on the auditory pleasure delivery. Uncork your M and treat your ears (and everyone's around you) to the sweet symphony of that legendary BMW Inline 6. Get those quick head turns as you drive by and let people know you didn't buy your average BMW.
Why Remus Exhaust?

World's largest manufacturer of aftermarket automobile sport exhaust; I.S.O. 9001 and T.U.V. approved O.E.M. supplier to BMW, Mercedes, AMG, Porsche, Ducati, allowing them access to shared CAD files for fully automated quick and accurate fitment. As well, back pressure calculations and sound testing in a highly sophisticated audio dyno room. Our dyno results as an O.E.M. supplier must be accurate. Dyno results are 'bolt on' only, with no complimentary modifications.

Robotic MIG and/or TIG welds that are thicker and stronger. Since moving into automated robotic welding, weld failures have become a thing of the past.

An appealing appearance that doesn't scream to the authorities, ""Hey look at me, I'm a Race System,"" but indeed, performs like one.

Full 303 stainless steel construction in bodies and tubing, 416 stainless steel tips; every unit specific with regards to back pressure, sound requirements and fitment.

Deep throaty Remus sound in all systems allowing the power and efficiency to be released. Horsepower increase equals efficiency increase, so fuel mileage is enhanced as well.

Three year unlimited mileage warranty. If there ever is a warranty claim, Remus will replace the product & pay $40.00 per hour for labor.