Buddy Club SPEC III exhaust systems are the lightest stainless-steel exhaust system on the market today. Its simple straight thru design creates an increase of exhaust gas velocity in order to enhance its efficiency. The resonator on the main pipe is specially designed to enhance torque in the low to mid RPM range. 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. All of our mufflers are made with SUS304 stainless steel 1mm thick wall material is used for main pipe. and the 0.8mm wall stainless is used for main silencer. This combination of materials creates a super light weight system. Moreover with the included bolt in silencer installed the SPEC III exhaust system meets most legal sound levels for day to day street use.