The RS-2 is a potent and versatile design that evolved from Yoshimura's original TRC, engineered to provide increased power and power delivery. With a different pyramidal shape that features increased volume, the RS-2 is a quieter system with a larger core - and it offers the added bonus of outstanding performance in a value-priced package. RS-2 Primary Features: Diamond-shape muffler. Cone shaped end-cap. Maximized internal volume. Straight, single core baffle. RS-2 Sleeve Options: Carbon fiber. Titanium. Aluminum. RS-2 Specifications: Diamond-shape can allows for more packing material creating lower noise. Muffler shape increases durability and performance from muffler packing. Two-stage large race baffle allows optimal performance throughout the RPM range.