Yoshimura R77 Race Slip-On Exhaust Honda CBR300R / CB300F The popular R-77 offers outstanding performance, thanks to being developed in the heat of competition. It features a trapezoidal design, which allows a large volume of packing material and in turn delivers top performance. The R-77 mufflers front cap is MIG-welded, while the end cap is riveted using high-end 304-L polished stainless steel rivets and bands. Features Superbike technology and styling Trapezoidal-shaped sleeve Large volume of packing material Straight baffle for ample flow Innovative end-cap Note Please check local laws before purchasing. Some modifications may be prohibited in some states.