QTP 3.5in QTEC Butterfly Kit

This QTP 3.5in QTEC Butterfly Kit gives you the butterfly valve and the hardware needed to install it. It's designed to let you easily open up your exhaust system for more sound and flow when you want it. You can bolt this right into your exhaust piping, and when opened, it bypasses the muffler for a louder, more aggressive exhaust note. It’s a straightforward way to change your exhaust sound on demand.

The butterfly valve design is a simple and effective way to control exhaust flow. When closed, exhaust gases pass through your muffler as usual. When you open the valve, the gases take a direct path, bypassing the muffler entirely. This offers a noticeable change in sound and can also improve exhaust flow, especially on modified engines. The kit comes with the valve itself and the hardware required to mount it, making it a complete package for adding an exhaust cutout.