FMF Mini Powercore 4 for XR/CRF50

The Mini PowerCore 4 for XR/CRF50 features a hi-flo end cap to enhance all-around performance. It has been computer designed and dyno-tested to be compatible with every 4-stroke application, and its enhanced sonic evacuation increases power and flow. The stainless steel mid-pipe provides lightweight durability, and the round perforated steel inner cores with hi-flo technology maximize flow. FMF's exclusive cross-weave internal packing offers longevity and efficient sound dispersion. An elliptical aluminum can is strategically sized for optimum performance, and an optional Quiet Core insert decreases sound level. Includes a screen-type spark arrestor for uninterrupted exhaust flow and power.