The YOSHIMURA RS-4 Full System Exhaust features a pentagonal-shaped muffler designed to maximize internal volume. This configuration supports the system’s engineering focus on airflow and performance, utilizing a polyresonant duplex front chamber to manage exhaust flow efficiently.
Inside the muffler, a stepped, two-stage core baffle is installed to refine the exhaust note and performance characteristics. The system is compatible with spark arrestors and sound inserts, allowing riders to customize the exhaust’s acoustic profile and compliance features as needed.