Unleash that GT3 derived powerplant on the world! These headers with sport cats turn the GT4 RS up to eleven. With the factory muffler still in place, you'll be treated to an aggressive deep tone with the ability to turn the volume all the way down by turning off PSE (Porsche Sport Exhaust). Pair this system with our Valvetronic X-Pipe for an absolute ripping high pitched exhaust note while stilling having the ability to turn the volume down using the PSE button
The most powerful header system for the GT4 RS, period. Max gains of 48 HP and 54 ft/lbs of TQ are seen at 4700 RPM. That's 53 HP at the crank! Peak power goes from 456 to 490 at the wheels. You're going to feel the power that this system adds to your GT4 RS!