Built using our brushed aluminum octagonal muffler housing and carbon fiber end cap from our full size exhaust systems. The “Chubby” is a short muffler design that features increased volume which adds power and makes an awesome sound!
Designed to work with 132cc big bore kits
Features big tube triple stepped head pipe design to insure good low end torque while maximizing higher RPM horsepower
Purpose built Chubby muffler with a larger intake cap and core creating the correct amount of back pressure
O2 bung to tune air/fuel management. We recommend ECU tuning available through CJR Performance
Standard features including our carbon fiber end cap and 6″ brushed aluminum “Chubby” muffler
Optional “Backyard” quiet core insert 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