Built using our octagonal muffler housing and carbon fiber end cap from our full size exhaust systems. The “Chubby” is a short muffler design that creates big bike sound and increases power!
Octagonal-shaped large volume muffler housing means more power and better sound
Stepped diameter stainless-steel head pipe maximizes power from bottom to top end
CNC machined brackets
Carbon fiber end cap
Optional “Backyard” quiet core insert available
CRF110/125F: ECU mapping available through CJR Performance increases power when combined with other mods