Top Speed Pro-1 T304 Stainless Steel Rear Muffler Bypass Pipe – Porsche 991 GT3 / GT3RS (2014–2018) & 997 GT3 / GT3RS (2007–2013)

Top Speed Pro-1 T304 Stainless Steel Rear Muffler Bypass Pipe

Fits Porsche 991 GT3 / GT3RS (2014–2018) & 997 GT3 / GT3RS (2007–2013)

Unleash the sound and performance of your Porsche GT3 or GT3RS with the Top Speed Pro-1 T304 stainless steel rear bypass pipe. Designed to replace the factory muffler section, this precision-engineered unit delivers a lightweight, high-flow solution while retaining the factory SPORT mode functionality.

Crafted with mandrel-bent 50mm–60mm O.D. piping and TIG-welded construction, this direct bolt-on system enhances exhaust flow for improved throttle response, deeper tone, and significant weight savings.

Features

✔ Constructed from T304 stainless steel – corrosion-resistant and durable
✔ Mandrel-bent 50mm–60mm piping for maximum flow efficiency
✔ Precision TIG-welded for strength and clean finish
✔ Direct bolt-on installation – mounts to OEM locations
✔ Retains factory SPORTS MODE functionality
✔ Mounting hardware included
✔ Lightweight design: 5.35 lbs vs. stock 19.5 lbs (over 75% weight reduction)
✔ Improved sound and performance – deeper, sportier exhaust note
✔ Includes side-by-side installed comparison photos with the OEM muffler

Compatibility

• Porsche 991 GT3 / GT3RS (2014–2018)

• Porsche 997 GT3 / GT3RS (2007–2013)

Notes

⚠️ Titanium tips shown in product photos are sold separately and not included in this listing.
For the complete system with titanium look tips, see:
👉 Porsche GT3 / GT3RS T304 Exhaust Bypass System + Titanium Look Tips

📌 Please specify your car model (991 or 997) when ordering.