Bmw G80/G81/G82/G83 GMS/G8X Midpipe

Enhance your BMW M3 G80/G81 or M4 G82/G83 with the G-tech Big Single Midpipe. Get deeper, sportier exhaust tones in Sport+ mode without touching downpipes or the ECU. This midpipe improves exhaust flow, boosts sound, and maintains factory emissions and drivability.

Key Features & Benefits

• Material: High-grade T304 stainless steel for durability and corrosion resistance
  
  

• Direct fit: Bolt-on, clamp-on design with CNC-cut flanges
  
  

• Plug & play: Easy installation, fully reversible to stock
  
  

• Sound: Aggressive Sport+ tone, quiet in Efficient mode, zero rasp or drone
  
  

• Emissions friendly: No modifications to catalytic converters required
  
  

• No tuning needed: Works with stock ECU and exhaust
  
  

Vehicle Compatibility / Fitment

• BMW M3 G80 / G81 (S58 Engine)
  
  

• BMW M4 G82 / G83 (S58 Engine)
  
  

• G-tech compatible for GMS/G8X midpipe layout
  
  

Technical Specifications

• Material: T304 stainless steel
  
  

• Construction: TIG welded with CNC-cut flanges
  
  

• Design: Big single midpipe for improved flow and sound
  
  

• Finish: Polished stainless steel
  
  

• Weight: Lightweight yet strong for durability
  
  

Installation Information

• Tools required: Basic hand tools and included clamps
  
  

• Estimated install time: 1–2 hours
  
  

• Professional installation recommended for best fit and alignment
  
  

• No cutting or modifications required; fully plug & play
  
  

Performance Gains / Why It’s Needed

Stock midpipes restrict flow and limit sound character. The G-tech Big Single Midpipe opens the exhaust path, enhancing mid-to-high RPM sound while preserving emissions compliance. Real-world testing shows a deeper, more aggressive tone with zero CELs or warning lights, all without changing downpipes or ECU tunes.

What’s Included in the Kit

• G-tech Big Single Midpipe
  
  

• Cross brace compatible with single midpipe layout
  
  

• OE-style sleeve clamps for seamless connection to stock muffler section
  
  

Warranty & Guarantee

• Backed by G-tech Lifetime Warranty
  
  

• Return policy available for unused items in original packaging
  

Ideal BMW M3/M4 exhaust upgrade, midpipe replacement, performance exhaust mod, G8X sound enhancement. Pair with G-tech intake or full exhaust collection for maximum performance and tone.

FAQs

Q1: Will this midpipe trigger a check engine light?
No. It maintains all factory emissions and works without tuning.

Q2: Do I need downpipes or ECU tuning?
No. The midpipe delivers improved sound and flow on stock setup.

Q3: Is installation difficult?
It is a bolt-on, clamp-on design requiring only basic tools.

Q4: Can I revert to stock?
Yes. Fully reversible using the included clamps.

Q5: Does it drone at highway speeds?
No. In Efficient mode, it is quiet like OEM; aggressive in Sport+ mode.