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Our Valved Exhaust System is designed to help you extract the most potential from your GT4 while still being streetable
Boost your PORSCHE 991/991
Upgrade your performance with Ryft
Removing the factory side mufflers opens up the exhaust and allows for significantly improved air flow
Kline Innovation Ferrari FF center pipes Audi-S5-3-0T-2007 Our Valved Exhaust System isTHE SOUND Our main criteria for the F12, to produce a super light, Inconel 625, valvetronic, full exhaust system, that would be subtle and pleasant at cruising speeds, but to open up the sound to full scream on full throttle and valve open. Replacing the stock catalyst for high flow 200cpsi HJS sports catalysts, we were able to open the sound significantly. Replacing the stock H pipe for our perfect geometry, laminar flow X Pipe, enriches the tone, as
