Yamaha Roadstar 1600/1700 99-07 POWERSHOTS Vance and Hines Cat No 18513
Powershots feature two 2 1/2" muffler bodies, dual power chambers, a single chrome 360° heat shield and unique dual-staggered, twin-layered slash-cut end tips. Hidden under the heat shields, the Power Chamber crossover system uses the volume of both mufflers to improve scavenging of each cylinder providing more efficient combustion for horsepower and torque. The end product is music to the throttle, and to the ears.