There are 226 products.
M4 Full Stainless System Hip shorty look slip-on Black ceramic coated 304 stainless steel +5 hp over stock system Saves 6 lbs over stock Does not include quiet insert Stage 1 Q10 quiet insert sold separately
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
M4 Full Stainless System With Street Slayer Muffler Street slayer style muffler Stainless steel tubing Does not include quiet insert Stage 1 Q8 and stage 2 Q6 quiet insert sold separately
M4 Full Stainless System With Street Slayer Muffler Street slayer style muffler Stainless steel tubing Does not include quiet insert Stage 1 Q8 and stage 2 Q6 quiet insert sold separately
M4 Dual Tech1 Slip-On Exhaust Tech1 style carbon fiber mufflers Does not include quiet inserts Stage 1 Q7 quiet inserts sold separately
M4 Titanium Half System With GP2 Slip-On Titanium GP2 style muffler Titanium catalytic eliminator Saves 15 lbs over stock Comes with stage 1 Q1 quiet insert Optional stage 2 Q3 quiet insert sold separately
M4 Full Stainless System With Standard Muffler Polished muffler Stainless steel tubing Saves 10lbs over stock and has a power increase of 16 horsepower Compatible with stock passenger foot peg or supplied race bracket Stage 1 Q5 and stage 2 Q4 quiet inserts sold separately
M4 Full Stainless System With GP19 Muffler Black GP19 style muffler Stainless tubing +6 horsepower over stock Pre-installed with stage 1 Q1 quiet insert Stage 2 Q3 quiet insert sold separately
M4 Full Stainless System Standard style muffler Stainless steel tubing Raised race mid-pipe and race bracket Removes passenger foot peg Does not include quiet insert Stage 1 Q5 and stage 2 Q4 quiet insert sold separately
M4 Full Stainless System Standard style muffler Stainless steel tubing Does not include quiet insert Stage 1 Q5 and stage 2 Q4 quiet insert sold separately
M4 Full Stainless System Standard style polished muffler Stainless steel tubing Compatible with stock passenger foot peg or supplied race bracket Does not include quiet insert Stage 1 Q5 and stage 2 Q4 quiet insert sold separately
M4 Race Full Stainless System With Scalene Muffler Scalene style carbon fiber muffler Stainless steel tubing Large diameter dyno tuned system for ultimate performance Race mount Includes race bracket to eliminate passenger footpegs Not compatible with stock passenger footpegs Recommended aftermarket rearsets for higher foot placement 10% horsepower increase at redline 7.4 lb weight savings over stock Fender eliminator required Does not include quiet insert...
M4 Full Stainless System With GP19 Muffler Black GP19 style muffler Stainless steel tubing Saves 10.7 lbs over stock +9 hp over stock Comes with M18 and M12 O2 bung Pre-installed with stage 1 Q1 quiet insert Stage 2 Q3 quiet insert sold separately
M4 Full Stainless System With GP19 Muffler Black GP19 style muffler Stainless steel tubing Saves 10.7 lbs over stock +9 hp over stock Comes with M18 and M12 O2 bung Pre-installed with stage 1 Q1 quiet insert Stage 2 Q3 quiet insert sold separately
M4 Full Stainless System With Scalene Muffler Scalene style carbon fiber muffler Stainless steel tubing Large diameter dyno tuned system for ultimate performance 10% horsepower increase at redline 7.4 lb weight savings over stock Retains passenger foot peg assembly Does not include quiet insert Stage 1 Q10 quiet insert sold separately
M4 Slip-On Exhaust Features: Standard style titanium slip-on muffler with carbon fiber end cap Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Slip-On Exhaust Features: Standard style carbon fiber slip-on muffler Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Slip-On Exhaust Features: Standard style carbon fiber slip-on muffler Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Slip-On Exhaust Features: Standard style titanium slip-on muffler Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Slip-On Exhaust Features: Standard style carbon fiber slip-on muffler Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Slip-On Exhaust Features: Standard style titanium slip-on muffler Stainless steel tubing Retains stock catalytic converter Does not include quiet inserts Stage 1 Q8 and stage 2 Q6 quiet inserts sold separately (2 required)
M4 Full Stainless System With GP Muffler Black ceramic coated GP style muffler Stainless steel tubing Comes pre-installed with stage 1 Q1 quiet insert Stage 2 Q3 quiet insert sold separately
M4 Titanium Half System With X-Model Slip-On X-Model style carbon fiber muffler Titanium catalytic eliminator Saves 15 lbs over stock Does not include quiet insert Stage 1 Q7 quiet insert sold separately
M4 Bolt-On Exhaust Features: Bolt-on system Does not include quiet insert Stage 1 Q5 and stage 2 Q4 quiet inserts sold separately (2 required)