SUPER SILENCER Easy and effective way to lower sound output from muffler for street use Lower sound decibel output by 7 dB, increase mid range torque for street use The Super Silencer is the most effective way to lower sound output from an exhaust system without sacrificing high-end power. The Silencer has also been shown to increase mid-range torque in some vehicles. The Silencer will lower average output muffler sound by approx. 7 dB. Available for A'PEX mufflers utilizing 115 mm and 90mm tip (all Supra models)