Mini Powercore 4 Exhaust System Yamaha TTR90 2000 2003

Features: Hi-Flo end cap boosts all-around performance. Computer designed and dyno-tested for every 4-stroke application. Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power. A stainless steel mid-pipe mates to the computer-designed rear can for lightweight durability. Round perforated steel inner cores make for optimum flow, using hi-flo technology. FMF's exclusive cross-weave internal packing provides longevity and maximum sound dispersion. Elliptical aluminum can offers strategic sizing for superior performance. Optional Quiet Core insert will provide a decrease in sound level if desired. Available with a screen-type spark arrestor that does not interrupt exhaust flow or performance. NOTE: Will not pass 2025 FIM sound regulation.