08-10 Kawasaki ZX-10R M4 Full Stainless System With GP Muffler
M4 Full Stainless System With GP Muffler GP style muffler Stainless steel tubing Saves 10.75lbs over stock while also producing 14 more horsepower Comes pre-installed with stage 1 Q1 quiet insert Stage 2 Q3 quiet insert sold separately