RVNG Raceworks - S58 4.5" Single Midpipe for BMW G80 M3 / G82 M4

Rvng SS304 Stainless Steel Dual to Single Midpipe — 4.5” Edition

INSTALL GUIDE: https://youtube.com/shorts/RJAP2U4y9cM?si=s0ZE-3YfhISRTALF

For your 2020–2025 BMW G80 M3, G82 M4 & G83 M4 (S58 Engine)

INCLUDES EXTENDED BRACE  

We’re proud to introduce the Rvng 4.5” Stainless Steel Single Midpipe — the largest and most aggressively engineered midpipe solution for the S58 platform. Unlike the typical 3.5” midpipes that every other company is offering, our 4.5” design delivers a massive 65% increase in flow area, unlocking performance gains you can truly feel.

This upgrade isn’t just about size — it’s about making the most of your S58’s potential. By removing the restrictive OEM midpipe and going beyond the industry-standard 3.5” setup, we’ve reduced backpressure to a minimum, resulting in faster turbo spool, sharper throttle response, and a raw, aggressive exhaust tone that sounds just as powerful as it feels.

Why 4.5” Matters:

We all know an Inch can go a long way. So while most companies settle at 3.5” and sell it as the standard — Rvng chose to offer a better product at a competitive price. When you realize you’re spending premium dollars, don’t you want the best? Our 4.5” system offers 65% more flow area, and when airflow improves, horsepower follows. Choosing Rvng means you’re not settling — you’re demanding more.

Key Benefits:

• +20HP / +32 TQ to the wheels
• 65% larger flow capacity over standard 3.5” pipes
• Faster turbo spool, improved throttle response
• Deeper, more aggressive exhaust tone
• ~17 lb weight reduction compared to OEM
• Direct bolt-on fit for G80 M3, G82/G83 M4 (cutting required)
• Fully compatible with OEM and aftermarket downpipes
• MPE compatible

Build Highlights:

• Mandrel-bent, TIG-welded 4.5” 304 stainless steel
• CAD/CAM flange design for smooth transition
• Optimized radius bends for maximum flow
• Lifetime warranty on fitment and craftsmanship
• Fits both LHD and RHD models

Vehicle Fitment:

2020–2025 BMW G80 M3

2020–2025 BMW G82 M4

2020–2025 BMW G83 M4 Convertible