Porsche 981 GT4/Spider Exhaust Racing Headers side muffler bypass the exhaust has a mellow

the exhaust has a mellow exhaust note

We determined the shortcomings of the OEM system and made significant improvements to the exhaust flow characteristics

Ardent will not be held responsible for any damage from installation or held accountable for laws violated while using this product

Our header design helps reduce exhaust restriction and temperatures for increased overall power while improving the header integrity

Custom designed chambered exhaust w/ Pierberg bypass flaps

Porsche 981 GT4/Spider Exhaust Racing Headers side muffler bypass the exhaust has a mellowPerformance Perfection Redefined. The Porsche 981 GT4 is one of the greatest modern day mid engine cars on the road and racetrack. We produced 453HP at the crank using these headers and a tuned plenum! The tried and true Flat 6 power plant has proven itself as a bulletproof platform for modern day endurance race cars. The GT4 is not just a "car" that is driven from point A to point B, but a machine that is often pushed to its limits on twisty mountain