Experience enhanced performance and sound control with the Yoshimura RS-4 Slip-On Exhaust (Part Number 224502D320). Designed through continuous development and collaboration with factory teams, this exhaust system optimizes mass centralization while providing a competitive edge. The pentagonal-shaped muffler and maximized internal volume ensure superior exhaust flow, while the polyresonant duplex front chamber and stepped, two-stage core baffle contribute to a refined sound profile. Additionally, the exhaust is compatible with a spark arrestor and sound insert for added versatility. Features: * Shape: Pentagonal-shaped muffler for optimal airflow * Volume: Maximized internal volume for improved performance * Front Chamber: Polyresonant duplex front chamber enhances sound quality * Core Baffle: Stepped, two-stage core baffle for effective noise reduction * Compatibility: Spark Arrestor/Sound Insert Compatible for customization