Buddy Club Pro Spec is a super light weight and highly efficient muffler that is made to perform for circuit runs. In its street version, to optimize torque in the low to mid speed range, it is equipped with an efficient middle silencer (resonator). Pro Spec Mufflers were designed for high performance as well as meeting sound level standards. With its deep throaty tone, it echoes its racing lineage. Features 60.5mm piping. MSRP: $628.00WOTM.com Price: $525.00 Choose: RSX Base (BC03-PSEXDC5-5)RSX Type S (BC03-PSEXDC5) All hardware and silencer included Quality welds Thank you for choosing Wide Open Throttle Motorsports, for all your performance needs.