GT Spec Mufflers are our flagship line of exhaust systems. These race-bred exhaust systems were engineered to handle extremely high-horsepower applications. GT Series are designed with minimal amount of bends and the canisters project at an angle like the N-1. The GT Series pipes and canisters are constructed of polished SUS 304 stainless steel. The 115mm polished tip give the GT Spec Mufflers an aggressive, yet refined style. All GT Spec Mufflers include the Super Silencer, which can reduce noise levels by up to 7 decibels.