The Yoshimura Slip-On Muffler R-77 consists of a trapezoidal-shaped sleeve, maximizing muffler volume, while offering a sharp silhouette to flow with the new body design. Single Muffler Design eliminates catalytic converter. The innovative CF end-cap is reminiscent of the R-55, featuring sharp edges for an attractive, eye catching appeal. Maximizes torque and usable power for optimum gains throughout the entire powerband.