Fabspeed Porsche 997.2 GT3 / GT3 RS Side Muffler Bypass Pipes (2010-2011) Select:Select Valve Configuration=Valved With perfectly optimized headers and

With perfectly optimized headers and EMITEC HJS German imported high-flow racing catalytic converters

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Valved controller kit included when you choose STANDARD EXHAUST

YOU dont want sintered metal clutch dust going into your engine seriously

Our state-of-the-art GT4 RS tune software upgrade is designed to work seamlessly with additional modifications

Fabspeed Porsche 997.2 GT3 / GT3 RS Side Muffler Bypass Pipes (2010-2011) Select:Select Valve Configuration=Valved With perfectly optimized headers andOptimized design that replaces the heavy and all very restrictive GT3 factory side mufflers for improved exhaust flow, increased sound, radiant heat, and massive weight savings. Available with or without SUPER PREMIUM HELICAL AEROSPACE Iso certified exhaust valves. FEATURES: Fits all Porsche 997. 2 GT3 GT3 RS vehicles 2010 2011 Replicates aggressive CUP car sound for the street no resonance no drone More power +9HP and saves 44 pounds 22 KG OFF the