Fabspeed Primary Muffler Bypass Pipe

This straight-through pipe directly replaces the heavy and restrictive factory Porsche OEM primary CENTER muffler with a Porsche Motorsports Carrera CUP-style design. This CUP primary muffler bypass pipe significantly enhances sports car sound, noticeably increases horsepower, and reduces weight from an ideal location at the rear of the vehicle. Purpose: Delivers a more aggressive flat-six exhaust note and provides significant power and weight reduction for improved performance and handling.

Sound:

All Porsche 964 coupes and cabriolets will exhibit a sportier and more aggressive flat-six sound compared to the stock muffler. When paired with the stock OEM Porsche 964 catalytic converter and the stock 964 secondary rear muffler, the car remains 100% daily drivable while offering a sporty flat-six sound. A recommended complementary upgrade is the Fabspeed 964 CUP aluminum airbox cover lid.

Power:

Dyno testing, verified by both Porsche and Fabspeed, has shown gains of +12.5 HP (10 horsepower to the wheels), providing a real-world, seat-of-your-pants improvement.

Features:

• Fits all Porsche 964 C2, C4, RS America, Euro RS, and Speedster vehicles from 1989-1994.
• Increases power by +12 HP (10 wheel horsepower) and greatly improves throttle response.
• Saves 25 lbs from the rearmost part of the vehicle, significantly enhancing handling.
• 100% cat-back system compliant with all 50-state and international emissions regulations.
• Constructed from high-quality 14-16ga CNC mandrel-bent T304L stainless steel for optimal flow and maximum durability.
• Simple DIY bolt-on installation; reuses the 2 factory Porsche ball clamps and donuts. Fabspeed supplies all other necessary hardware.