Fabspeed Porsche 997 GT3 / GT3 RS Side Muffler Bypass Pipes 958.2 Turbo (2015-2018) the more efficiently it produces

the more efficiently it produces power

2 GT2RS Sport Headers

And best of all they won't cause any drone inside the cabin

radiant heat

Fabspeed's X-Pipe Exhaust System with your choice of tips

Fabspeed Porsche 997 GT3 / GT3 RS Side Muffler Bypass Pipes 958.2 Turbo (2015-2018) the more efficiently it producesOptimized 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 GT3 GT3 RS vehicles 2006 2009 Replicates aggressive CUP car sound for the street no resonance no drone More power +9HP and saves 44 pounds 22 KG OFF the rear