The Revolution RS for the Nissan 370Z is a light-weight Y-back exhaust with large diameter piping and an aggressive growl. The system includes a high flow Y-pipe that connects both engine banks through dual 2.5" (63.5mm) piping that merge smoothly into 3" (76mm) piping and a large resonator on the mid-pipe. The system exits an extra long, high-flow, RS muffler on the driver-side to manage sound output and avoid having to relocate the EVAP system. Dyno test have shown 11whp / 16ft-lbs gain on a normally-aspirated VQ37HR engine. Even with the large diameter piping, there is a 50% weight savings over the OEM stock system. Like all GReddy Revolution RS systems, it is a fully hand-welded 304 Stainless-Steel exhaust, that carries a Limited Lifetime Warranty.