The R-77 consists of a trapezoidal shaped sleeve, maximizing muffler volume while offering a sharp silhouette to flow with the new body. The innovative end cap is reminiscent of the R-55, featuring sharp edges for an attractive, eye catching appeal. Yoshimura's slip-on exhaust system utilizes the factory configuration on the bike, but gives the Yoshimura styling you crave. Trapezoidal-shaped carbon fiber sleeve. Maximized muffler volume. Includes Yoshimura muffler, stainless steel mid-pipes, all installation hardware, and step-by-step instructions for an easy install.