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Remus

Remus Valved OPF/GPF-Back Switchable Exhaust for BMW M3 G80 & M4 G82 (2021+) incl. Competition – Stainless 76mm Performance Rear System/Backbox, Cat-Back Style Sports Exhaust, Valve-Controlled Muffler/Rear Silencer, Tailpipe Options

Remus Valved OPF/GPF-Back Switchable Exhaust for BMW M3 G80 & M4 G82 (2021+) incl. Competition – Stainless 76mm Performance Rear System/Backbox, Cat-Back Style Sports Exhaust, Valve-Controlled Muffler/Rear Silencer, Tailpipe Options

£2,044.28
£2,271.42 £2,044.28
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Remus OPF-back Switchable Rear System for G80 M3 and G82 M4 including Competition models

Transform the character of your G-series M car with this Austrian-made, valve-controlled OPF-back rear section. Engineered for the S58-powered G80 saloon and G82 coupé from 2021 onwards, it brings a harder-edged motorsport tone, freer breathing and beautiful craftsmanship in stainless steel. If you are hunting for a BMW M3 M4 sports exhaust upgrade, rear silencer replacement, OPF-back performance system, flap-controlled backbox or a premium valved muffler assembly for track use, this is the enthusiast favourite.

Highlights

  • Valve-controlled sound using the factory actuator motors and electronics
  • Shot-blasted finish with 100 percent stainless steel construction
  • Larger 76 mm pipework for reduced back pressure and sharper response
  • Precision fit to OEM mounting points for a clean, bolt-on install
  • Hand built in Austria with a 24 month manufacturer warranty

What is included

  • Remus Racing centre sport exhaust with integrated valves
  • Connection tube set with spherical joint
  • Front silencer replacement tube for the OPF-back configuration
  • One tailpipe set required and supplied separately

Important: Tailpipe tips are not included. Choose your preferred finish below to complete the system.

Tailpipe options sold separately

  • Stainless steel chromed angled rolled edge Ø 102 mm
  • Stainless steel chromed angled straight cut Ø 102 mm
  • Stainless steel chromed straight cut with carbon insert Ø 98 mm
  • Stainless steel black chrome straight cut with carbon insert Ø 98 mm
  • Carbon tailpipe set with titanium internals Ø 102 mm

Technical information

  • OEM tube diameter 70 mm
  • Remus tube diameter 76 mm
  • Valves operate via the original BMW actuators and vehicle electronics
  • Installs on the standard mounting points. Cutting of the factory exhaust is required

Why owners choose this system

This OPF-back upgrade unlocks a deeper, more purposeful soundtrack while keeping cabin refinement manageable when the valves are closed. The flow-optimised design helps the S58 breathe more freely on circuit. At MJ Modifications we have fitted and supplied multiple Remus systems for the G80 and G82 platform and feedback on tone, fit and finish has been consistently excellent. Our customers love the quality, the switchable character and the OEM-level integration of the valve control.

Vehicle suitability

  • BMW G80 M3 2021 onwards with or without GPF
  • BMW G80 M3 Competition 2021 onwards with or without GPF
  • BMW G82 M4 2021 onwards with or without GPF
  • BMW G82 M4 Competition 2021 onwards with or without GPF

Fitting and support

Professional installation recommended. MJ Modifications offers fitting at our Warwickshire workshop. Request a quote at info@mjmodifications.co.uk.

Compatibility check

We verify compatibility before dispatch. Please provide your UK registration or the last 7 characters of your VIN at checkout.

Legal and usage notes

  • Racing item with no ECE type approval
  • Use on public roads is generally not permitted
  • Cutting of the stock system is required for installation
  • For track-only applications an ECU calibration may be beneficial to optimise performance and avoid potential warnings

Part numbers

081021 1300 + 081021 1400 + 081021 1510

Manufacturer and warranty

Brand: Remus

Warranty: 2 year Remus warranty non transferable

Search friendly terms

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