Fabspeed Porsche 997 GT3 / GT3 RS Side Muffler Bypass Pipes - FS.POR.997GT3.SMBV Select Valve Configuration:Valved tow and race tunes for

tow and race tunes for diesel vehicles

double-walled slash cut tips that comes in Chrome Silver finish (part number 3020-42080) or Diamond Black finish (part number 3020-43086) for the added stealth looks

This is a gain that you will never see on a dyno

-Direct Plug & Play

Fabspeed Porsche 997 GT3 / GT3 RS Side Muffler Bypass Pipes - FS.POR.997GT3.SMBV Select Valve Configuration:Valved tow and race tunes forOptimized design that replaces the heavy and restrictive factory side mufflers for improved exhaust flow, increased sound and weight savings. Available with or without valves. HELICAL VALVES We chose to use Helical Valves on our 997. 2 GT3 GT3 RS track exhaust systems for their unprecedented quality which have been proven by many OEM manufacturers such as McLaren, Ferrari, Lamborghini, and many more. Helical valves are an integral part of our Side