Soul Performance Products - Valved Muffler Bypass Conversion (986 Boxster / S)

2026-04-15T11:32:25-04:00

Price: 1375.00

Designed to Fit

1997 - 2004 Porsche Boxster / S

Product Details

These unique 986 Boxster muffler bypass conversion pipes easily bolt into factory exhaust for an OEM sound with valves closed and a race–inspired sound with valves open. The default valve orientation upon startup is valves closed for a refined warm-up experience and an invigorating tone reminiscent of air-cooled CUP cars is just a button press away!

Soul wanted to design a cost effective valved exhaust that would offer offer the ability to go from “Cruising Sunday to Track Day” at the press of a button with the default setting to be valves closed for a more refined startup experience – no shaking the garage or waking up the neighbors. Minimizing drone was also a priority. Porsche implemented a section of piping in the exhaust that can easily be unbolted and replaced – a perfect location to incorporate valved Muffler Bypass tubes!

SOUND: Don’t worry about starting up your Boxster in your garage – valves are closed by default! The OEM-driving Porsche characteristics and exhaust note are retained until you open the valves, and when you do, you’ll be treated to an aggressive bark as the mufflers are bypassed. Exhaust gases are routed out through dump tubes with valves open to give a flat–six roar.

CONSTRUCTION: Each system is made in-house by our fabrication team from mandrel bent .065″ wall, 2.5″ diameter T304L stainless steel tubing. Brackets are laser cut, press brake bent, then TIG welded for maximum durability. All welds are back purged for increased longevity under the most extreme conditions.

BOLT ON AND GO: Each exhaust is rigorously quality-checked, tested in a fixture to ensure perfect fitment, and then foam packed to ensure it arrives in perfect condition. New high grade hardware is included for the header to exhaust flanges. Thorough installation instructions are included in the box for a straightforward install that can be performed by most DIY enthusiasts.

LIFETIME WARRANTY: Enjoy your SOUL exhaust components with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any issues or answer any questions that you may have.

Install Guide

Video