Speedster Short exhaust with Race Pro Tips (RPT) make use of all of the high-tech features of regular 2.5-inch Speedster systems. The tips mimic the Race Pro machined design, and are held in place with 12-point bolts. The RPT designation comes from adapting the design from the Race Pro 4-inch muffler into this full system. Uses the PowerPort for increased power and uses 1.75-inch constant velocity cores for exceptional sound and performance. The 2.5-inch heat shields expand to 2.75-inches at the end.