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Remus

Remus Racing Valved Axle-Back Exhaust Rear Silencer/Back Box for BMW M3 G80 & M3 Competition, M4 G82 & M4 Competition (2021+) — OPF/GPF Compatible Stainless Steel, OEM Valve Control, S58 Performance Muffler Quad Tip Upgrade

Remus Racing Valved Axle-Back Exhaust Rear Silencer/Back Box for BMW M3 G80 & M3 Competition, M4 G82 & M4 Competition (2021+) — OPF/GPF Compatible Stainless Steel, OEM Valve Control, S58 Performance Muffler Quad Tip Upgrade

£1,904.46
£2,116.07 £1,904.46
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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 Racing Rear Section with Valve Control for BMW G80 M3 and G82 M4

Turn up the character of your S58 with this Remus Racing rear silencer and link pipe set. Designed specifically for the G80 M3 and G82 M4 platform, including standard and Competition variants with or without OPF, this valve-controlled rear box delivers a harder-edged motorsport tone, crisp throttle response and beautifully engineered build quality. Factory flap motors are retained for drive-mode sound management, so you keep comfort when cruising and a fierce soundtrack when you want it.

Supplied as the Remus RACING sports rear section and connection tube package with integrated valves, it mounts to the original points for a precise fit. Choose your preferred tailpipe finish separately to complete the look.

Part numbers: 081021 1400 and 081021 1510

Why enthusiasts choose this Remus Racing rear box

  • Race-bred tone with deeper idle, sharper upshifts and an authentic performance character
  • Valve control via the car’s original flap actuators for in-cabin mode selection
  • Austrian craftsmanship, shot-blasted finish and high-grade stainless construction
  • Increased pipe diameter for reduced back pressure and stronger performance potential
  • Lightweight design with perfect fitment and OE-level integration
  • Spherical connections and factory hanger locations for a clean, secure install
  • Backed by a 24 month Remus warranty

Dimensions

  • OE tubing: 70 mm
  • Remus tubing: 76 mm

Tailpipe choices sold separately

Note: Tips are not included and are offered as optional extras.

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

What is included

  • Remus RACING sports rear silencer with integrated valves
  • Connection tube package with spherical joints
  • Compatibility with factory valve actuators and vehicle electronics

Installation

  • Bolts to original mounting points for a straightforward fit
  • Attention: Cutting of the factory system is required
  • Valve operation retained through OEM electronics and drive modes
  • Type reference: G234M, suitable for cars with and without OPF/GPF

Professional fitting: We recommend installation by MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Vehicle compatibility

  • BMW G80 M3 2021 onwards with and without OPF
  • BMW G80 M3 Competition 2021 onwards with and without OPF
  • BMW G82 M4 2021 onwards with and without OPF
  • BMW G82 M4 Competition 2021 onwards with and without OPF

Fitment check: We verify compatibility before dispatch. Add your UK registration or last 7 of your VIN at checkout.

Important notice

RACING product. No ECE type approval. Not for use on public roads. For closed-course and track use only.

An ECU calibration may be beneficial on track-focused setups to optimise performance and help avoid a warning light.

Brand

Remus

Warranty

2 year Remus warranty, non-transferable

Real-world feedback

We have fitted and used this Remus Racing rear section on customer G80 and G82 builds and the response has been excellent. Owners praise the deeper, more aggressive note, premium finish and seamless valve integration that keeps daily usability intact while unlocking serious sound when you want it.

Search terms customers use

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