RPI exhaust systems are designed in house and offer an excellent balance of performance and sound. All RPi exhaust systems are tested under strict conditions to ensure the most performance for your car. For those who want better sound and performance without drawing a lot of attention, we have the ST series. The GT and GtRace series exhaust systems are designed for maximum sound and power. All RPi exhaust systems are made in the USA using top quality T304 stainless steel and come with a Limited Life Time Warranty.
As with all RPi GT series exhausts, each system is designed with maximum performance and superior sound in mind. Our 335i exhaust follows the GT series tradition offering a remarkable torque and hp increase. Expect a gain of 20-40ft/lbs* and 15-30hp*. All RPi exhausts are made with the high quality T304 stainless steel, come with the RPi lifetime warranty and is 100% made in the USA.