ModStock - Exhaust mods

Upgrade Your F8X M3/M4 with the All-New Modstock Equal Length Midpipe

Transform the sound and character of your BMW F80 M3 or F82/F83 M4 with Modstock’s brand-new Equal Length Midpipe. Specifically engineered for the F8X platform, this premium exhaust upgrade delivers the iconic equal length exhaust note, improved exhaust flow, sharper throttle response, and a more engaging driving experience.

Designed to bring out the best of the S55 engine, our Equal Length Midpipe produces a smoother, more exotic tone while maintaining excellent fitment and build quality.

Choose Your Sound

🔥 Resonated Rear SectionEnjoy a deeper, smoother exhaust note with reduced drone and a refined tone that’s perfect for daily driving and long journeys.

🔥 Non-Resonated Rear SectionUnlock a louder, more aggressive exhaust note with maximum volume, enhanced turbo sound, and a more race-inspired driving experience.

Engineered for Performance

Our Equal Length Midpipe is designed to optimise exhaust flow and improve gas scavenging, helping to create a more balanced exhaust pulse and the distinctive sound that F8X owners love. The result is improved responsiveness, enhanced driving enjoyment, and a richer S55 soundtrack throughout the rev range.

Why Choose Modstock?

✔ Precision-engineered for the BMW F8X M3/M4 platform✔ Signature equal length exhaust tone✔ Premium-quality materials and OEM+ fitment✔ Choice of resonated or non-resonated rear sections✔ Compatible with stock and aftermarket exhaust systems

Professional Installation Options

We offer a range of convenient fitting services to suit your needs:

🔧 In-House Workshop Installation🚐 Mobile Workshop Service🏠 Driveway Fitting Service – professional installation at your home

Worldwide Shipping Available

No matter where you’re located, we can ship your new Equal Length Midpipe directly to your door, with professional fitting services available for customers who want a seamless installation experience.

Experience the sound the S55 should have had from the factory with Modstock’s latest Equal Length Midpipe.

Order yours today and discover the perfect balance of performance, sound, and drivability.