Back in stock… full exhaust for the The Revolution RS for the second generation Scion tC features large diameter 2.5” mandrel-bent piping which extends all the way to the front of the vehicle’s main catalytic-converter for maximum flow. Dyno testing shows gains throughout the usable power band, 9hp/6ft-lbs . The aggressively angled compact Revolution RS muffler is aided by an extra-large oval front resonator to help control sound quality. Like all GReddy Revolution RS systems, the exhaust is made from fully hand-welded 304 Stainless-Steel and carries a Limited Lifetime Warranty.