HKS engineered this catback exhaust for the Subaru BRZ, Scion FR-S, Toyota 86 to weigh 50% less than the stock muffler, pipes and silencer. The design utilizes cannonball-shaped exhaust tips with carbon fiber tip covers. The straight structure reduces the exhaust pressure by 60% compared to stock and is compatible with over 350ps. If you're looking for "lightweight" and "speed" in a single package, this will do the trick. The sound produced by this HKS exhaust system is clear due to the equal length pipe layout after the y-shaped pipe. The silent chamber eliminates low exhaust resonance and presents a low-tone.