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 muffler’s front cap is MIG-welded, while the end cap is riveted using high-end 304-L polished stainless steel rivets and bands.
Superbike technology and styling
Trapezoidal-shaped sleeve
Large volume of packing material
Straight baffle for ample flow
Innovative end-cap
Removable Low-Volume Insert
Stainless steel header and tail-pipe.
Fitting Instructions: http://www.yoshimura-rd.com/images/132100(2,5,7).pdf
Race, Removable Baffle