Valvetronic Designs Valved Exhaust System – BMW G80 M3 / G82 G83 M4

Equal-Length Performance with Refined S58 Sound

Transform the sound and performance of your BMW G8X platform with the Valvetronic Designs Exhaust System for the G80 M3 and G82/G83 M4. Designed around a single 3.5” equal-length mid-pipe architecture, this system unlocks the true character of the S58 engine while maintaining refined drivability and OEM compatibility.

Engineered for enthusiasts who want sharper tone, improved exhaust flow, and premium valve control, the system pairs perfectly with the factory rear section or can be upgraded with the optional Valvetronic Designs Valved Axle-Back Exhaust for full sound customisation.

Available in T304 stainless steel or ultra-lightweight Grade 5 titanium.

Key Features

• Designed for BMW G80 M3, G82 M4 Coupe & G83 M4 Convertible
• Single 3.5” equal-length mid-pipe design
• Optional valved axle-back exhaust system available
• Equal-length architecture improves exhaust pulse balance
• Higher-pitch, refined S58 exhaust tone
• Compatible with OEM or aftermarket downpipes
• No CEL design with OEM compatibility
• Electronic valve control with included controller
• OEM valve integration available
• Precision TIG-welded and mandrel-bent tubing
• Available in T304 stainless steel or Grade 5 titanium
• Premium exhaust tips included

Sound Characteristics

Engineered to improve the factory S58 exhaust tone without excessive rasp or drone.

With OEM Rear Section:
Sharper, more engaging tone with improved clarity and depth

With Optional Valved Axle-Back:
Aggressive motorsport-inspired sound when open
Refined, quiet operation when closed

Equal-Length Benefits:
Balances exhaust pulses for smoother and more exotic sound characteristics

Performance Benefits

• Improved exhaust flow and scavenging
• Enhanced throttle response and turbo efficiency
• Reduced exhaust restriction throughout the RPM range
• Compatible with stock or upgraded downpipes

Weight Savings

Titanium System:
Up to 57.8 lbs lighter than OEM

Stainless Steel System:
Up to 24.7 lbs lighter than OEM

Construction Options

• T304 Stainless Steel
  • Durable, corrosion-resistant, refined tone
• Grade 5 Titanium
  • Lightweight with sharper, exotic exhaust characteristics

Valve Integration

• Electronic valve controller included
• Rapid valve open/close operation
• OEM integration available for factory-style functionality

Installation

• Mid-pipe and axle-back can be installed independently
• Direct bolt-on installation
• Fully reversible to stock

Professional installation recommended

Installation available at Sequential Racing – Altona North, Melbourne. See exhaust installation.

Compatibility Notes

• V1 / V2 components are not compatible with V3 systems
• V3 mid-pipe includes additional clearances near downpipe connections and mid-section

Small visible gaps prior to tightening are normal and by design

Vehicle Fitment

• BMW G80 M3 – 2020+
• BMW G82 M4 Coupe – 2020+
• BMW G83 M4 Convertible – 2020+

Engine: S58 Twin Turbo Inline-6

What’s Included

• Single 3.5” Equal-Length Mid-Pipe Assembly
• Cross Brace
• Optional Valved Axle-Back Exhaust
• Electronic Valve Controller
• Exhaust Tips
• All Required Hardware & Clamps

Specifications

• Mid-Pipe Diameter: 3.5”
• Axle-Back Diameter: 2.75”
• Materials: T304 Stainless Steel or Grade 5 Titanium
• Valves: Electronic with Remote Controller
• Finish: Brushed Stainless / Raw Titanium

Why Choose Sequential Racing?

Sequential Racing supplies premium performance exhaust systems for BMW M and GR platforms, focusing on proven products that deliver exceptional sound, fitment, and performance.

• True equal-length S58 exhaust design
• Premium valved exhaust technology
• Available in stainless or titanium construction

Upgrade your BMW G80 M3 or G82/G83 M4 with the Valvetronic Designs Exhaust System and experience the S58 platform with sharper tone, improved flow, and complete sound control.

Frequently Asked Questions

Mid-pipe only, or mid-pipe plus valved axle-back?

The mid-pipe keeps your factory rear section and sharpens the S58 tone. Adding the valved axle-back gives you full quiet/loud control. If you only want the mid-pipe, see the Valvetronic HFD midpipe.

Stainless steel or titanium?

Titanium saves up to 57.8 lbs over stock and has a sharper, more exotic note. Stainless saves up to 24.7 lbs and costs less.

Will it throw a check engine light?

No. It is a no-CEL design that works with OEM or aftermarket downpipes.

Do you ship and install in Australia?

Yes. We ship Australia-wide and install at our Melbourne workshop. Before fitting any exhaust to a registered road car, check the noise rules in your state.

See every Valvetronic Designs exhaust we stock, or all BMW M parts.