The Yoshimura RS-4 Slip-On Exhaust System, part number 16780BD520, is engineered for maximum performance and sound control. Collaborating with factory teams has led to innovations that enhance your ride, providing an unbeatable edge on the track or road. This exhaust system features a unique pentagonal shape, which optimizes internal volume and sound quality. Upgrade your motorcycle with this high-quality exhaust that emphasizes both performance and aesthetics. Features: * Feature 1: Pentagonal-shaped muffler: Designed for improved performance and sound. * Feature 2: Maximized internal volume: Enhances exhaust flow for increased power. * Feature 3: Polyresonant duplex front chamber: Reduces noise without sacrificing performance. * Feature 4: Stepped, two-stage core baffle: Provides optimal back pressure and sound tuning. * Feature 5: Spark Arrestor/Sound Insert Compatible: Versatile for different riding conditions.