Built using our black hard anodized octagonal aluminum muffler housing and carbon fiber end cap from our full size exhaust systems. The Pit Bike “Chubby” is a short muffler design that features increased volume which adds power and makes an awesome sound. It’s our big bike muffler with all the features including carbon end cap and four bolt serviceability. Dynoed many different tube and core diameters and made best overall power. Sacrificed .5 hp on top to gain bottom and mid. CJR Performance has a map for the stock ECU that makes more power if you open up the air box.
Octagonal-shaped large volume muffler housing means more power and better sound
Stepped head pipe diameter maximizes bottom, mid and top power over a single diameter design
Carbon fiber end cap
Rebuildable with simple hand tools, no grinding rivets.
In the event of crash-damage, all exhaust system parts are available individually
Optional “Backyard” quiet core available
*For closed course competition only; not intended for use on the street.
Warning:This product contains chemicals which are known to the state of California to cause cancer and reproductive harm. www.p65warnings.ca.gov