16-23 Honda CBR 500R M4 Slip-On Exhaust Carbon Fiber
M4 Standard Slip-On Exhaust Standard style muffler Increases performance Saves 5 lbs over stock Stock 82 dB @ 4,500 rpm/ M4 92 dB @ 4,500 rpm Retains stock catalytic converter Stage 1 Q5 and stage 2 Q4 quiet inserts sold separately