The S1R exhaust is a state-of-the-art product from Two Brothers Racing. The system features an T6 aluminum or carbon fiber canister highlighted by a natural finished aluminum outlet and stamped spring-mounted inlet for ultimate durability. The S1R exhaust from Two Brothers Racing showcases a race design while increasing all-around performance. Comes with all necessary hardware, tubing, instructions for installation. S1R Black Series Slip-On exhaust. T6 aluminum or aerospace high-temp carbon fiber canister. Teflon-coated magnesium end-cap. Stamped spring-fit inlet. Aluminum CNC-machined outlet. Rubber-lined, styled mount. Spiral-wound perforated core.