Yoshimura R-77 EPA Approved Slip-On Exhaust Suzuki GSXR 750 2011 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 Stainless Steel end-cap is reminiscent of the R-55, featuring sharp edges for an attractive, eye catching appeal. Slip-on systems include the R-77 muffler, stainless steel mid-pipe, and all necessary hardware for installation. This Yoshimura exhaust component or system meets EPA Noise Emission requirements of 80 dBA when installed on the specified motorcycle. Installation of this exhaust component or system on motorcycle models not specified may violate Federal Law. NOTE Please check local laws before purchasing. Some modifications may be prohibited in some states.