A true RACING SPEC MUFFLER is a light weight and highly efficient system that is designed specifically for circuit racing. In street form, our mufflers are designed to optimize torque in the low to mid RPM range, and our exhaust systems are equipped with an efficient resonator. The Buddy Club RACING SPEC MUFFLER series is designed for high performance applications while complying with sound level standards of local laws and regulations. With its deep throaty tone, you can begin to feel Buddy Club's impressive racing heritage.