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BMW

Remus Racing Axle-Back Exhaust - BMW G80 G81 G82 G83 (G8X) M3/M4 (Comp xDrive) - Valved Rear Silencer Back Box/Muffler, Quad Tip, Stainless Steel, S58 OPF/GPF Compatible | P/N 081023 1510-4

Remus Racing Axle-Back Exhaust - BMW G80 G81 G82 G83 (G8X) M3/M4 (Comp xDrive) - Valved Rear Silencer Back Box/Muffler, Quad Tip, Stainless Steel, S58 OPF/GPF Compatible | P/N 081023 1510-4

£2,500.88
£2,632.50 £2,500.88
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Remus 081023 1510-4 Rear Section Exhaust Upgrade for BMW G8X

Unlock the full character of the S58 with this track-focused rear silencer package from Remus. Part number 081023 1510-4 transforms the soundtrack of your G8X with a deeper, sharper tone and rapid valve response while keeping all factory driving modes intact via the original actuators.

We run this setup on customer cars and the feedback has been outstanding. Expect a more purposeful note, crisp overrun, and reduced back pressure without drone at motorway speeds when valves are closed. If you want a premium performance back box that looks as good as it sounds, this is it.

What you get

  • Remus RACING rear section with integrated valves
  • Centred connection tube package with spherical joint for precise fitment
  • Uses factory hangers and OEM valve motors for seamless plug-in valve control
  • Tailpipes sold separately so you can choose your preferred finish

Why choose this upgrade

  • Aggressive motorsport sound with OEM valve control
  • 100 percent stainless steel with shot blasted surface
  • Lower back pressure for improved flow
  • Lightweight construction and perfect fit
  • Handmade in Austria with a 24 month Remus warranty

Tailpipe choices - sold separately

Pick the quad tip design that suits your build. All options are direct fit for this system:

Technical details

  • Pipe diameter: OEM Ø 70 mm
  • Remus pipe diameter: Ø 76 mm
  • Valves operated by the car’s onboard electronics with stock actuators

Fitment and installation

Direct fit to factory mounting points. The original system requires cutting at the specified join to install this rear section. For a hassle-free professional install and valve calibration, book our in-house fitting service in Warwickshire. Contact info@mjmodifications.co.uk for a quote.

Vehicle compatibility

  • BMW G80 M3 saloon 2021 onwards with or without GPF
  • BMW G80 M3 Competition saloon 2021 onwards with or without GPF
  • BMW G81 M3 Touring Competition xDrive 2021 onwards with or without GPF
  • BMW G82 M4 coupe 2021 onwards with or without GPF
  • BMW G82 M4 Competition and xDrive 2021 onwards with or without GPF
  • BMW G83 M4 Convertible Competition and xDrive 2021 onwards with or without GPF
  • Engine: S58 3.0 twin turbo

Important notes

  • RACING version with no ECE type approval
  • For closed-course and track use only. Not for public road use
  • ECU calibration may be beneficial to optimise performance and avoid a check engine light on cars running additional hardware changes

Part numbers

Primary P/N: 081023 1510-4

Includes: 081021 1401 and 081023 1510

Brand and warranty

Manufactured by Remus. 2 year Remus warranty non transferable.

Compatibility check

We verify fitment before dispatch. Enter your UK registration or the last 7 of your VIN at checkout and our team will confirm.

Search-friendly highlights

BMW M3 exhaust upgrade UK. BMW M4 exhaust upgrade UK. G80 rear exhaust. G82 valved rear silencer. G81 M3 Touring quad exit. G83 M4 Convertible performance back box. OPF and non-OPF compatible rear section. Valved muffler for S58. Quad tip performance exhaust. Stainless steel racing backbox. Track-only exhaust system. Premium Austrian made exhaust. BMW performance exhaust specialist UK. Fast delivery and fitting available in Warwickshire.

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