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.
Big tube design maximizes performance for the 2019-2022 fuel injected CRF110 132cc Big Bore builds.
Featuring big tube triple stepped head pipe design to insure good low end torque while maximizing higher RPM horsepower.
We purpose built a Chubby muffler with a bigger intake cap and core that creates the correct amount of back pressure and really barks.
Standard 02 bung so all you tuners can get air fuel management dialed in. Tunes will also be available from CJR Performance.
Standard features include carbon fiber end cap and 6″ black hard anodized “Chubby” muffler.
Optional Big Bore “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