BMW G80 G81 M3 & G82 G83 M4 Exhaust System by Remus (2021+)

The BMW M3 / M4 Racing Exhaust System by Remus brings uncompromising performance sound and exhaust flow to the E90-platform M3 and M4, engineered for serious enthusiasts and track-oriented builds. Developed with Remus’ motorsport expertise and crafted from high-grade stainless steel, this range offers four high-performance variants designed to deliver aggressive, uninhibited sound and improved breathing compared to the factory setup. Whether you want a rear-only racing axle-back, a full cat-back upgrade, GPF-compatible routing, or a downpipe-back solution for maximum exhaust freedom, this collection covers all high-intensity options. These non-EEC approved configurations are intended for track or off-road use where homologation is not required.

Key Features

• Four Remus racing exhaust configurations engineered specifically for BMW M3 / M4 (non-EC approved, track / racing focus):

  • Racing Axle-Back System – Rear section upgrade for an immediate increase in tone and presence

  • Racing GPF Back System – Sports exhaust routing designed around the gasoline particulate filter (GPF) path

  • Racing Secondary Cat-Back System – Full rear-section performance upgrade for freer flow and enhanced sound

  • Racing Downpipe Back Sport Exhaust – Longest route upgrade with downpipe included for maximum flow and aggressive tone

• High-grade stainless steel construction for strength, heat resistance, and durability

• Deep, aggressive non-homologated acoustic tuning for track applications

• Sport quad exhaust tips or high-flow pipe outlets for strong visual presence

• Designed with Remus’ racing knowledge for drivers who prioritise sound and performance over road sound compliance

What’s in the box

Contents vary by variant selected:

• Racing Axle-Back: Rear pipes, mufflers, tips, and mounting hardware

• Racing GPF Back: Mid and rear exhaust sections, tips, and hardware

• Racing Secondary Cat-Back: Secondary cat-back pipes, mufflers, tips, and fittings

• Racing Downpipe Back Sport: Downpipe section, cat-back pipes, mufflers, tips, and exhaust hardware

• Exhaust clamps, gaskets, and fitment components as required per configuration

• Remus documentation and branding

Compatible Models

- 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+)