TOMEI EXPREME Ti TITANIUM MUFFLER For GRF WRX STI USDM EJ 440017Brand TOMEI Product Number 440017 Compatible Car GRF WRX STI USDM Compatible Engine EJ Product Description MORE POWER, LESS WEIGHT, DRAMATICALLY CHANGE YOUR WRX STI. High quality production, for true competition use without compromise. Only the best Titanium grade materials are used. From the special racing layout design, made as straight as possible, to the high flow silencer. We have poured our knowledge into it all. When you see our EXPREME Ti