Optimized 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 rear of all 997, 997.2, 991, 991.2 GT3 and GT3RS cars worldwide. 
• 100% emission compliant and CARB complaint and therefore street legal. 
• 14-16ga T304 Stainless Steel construction
• Simple bolt-on installation
• HELICAL AEROSPACE Imported Exhaust valves 100% the worlds very best- NO Cheap 100% Guaranteed to fail lousy Chinese exhaust valves like all local and other competitors- 
• IF you are contemplating GT3 side muffler bypass pipes with valves - OFTEN uses Cheap as dirt 100% guaranteed to fail exhaust valves from China- they even know their valves are SHIT!
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

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, Aston Martin, Pagani, and many more. Helical valves are an integral part of our Side Muffler Bypass pipes, opening and closing with precision to control the gas flow and optimizing engine back-pressure for improved performance. Helical's extensive experience in high-volume OEM automotive applications has led to standard features such as an extremely durable pneumatic actuator, precision flat sealing faces inside the valve, stiffening ribs and high-temperature bearings at both ends of the butterfly spindle.    

Click Here For Install Instructions for Porsche Homelink Connection For Valvetronic Exhaust Control