FMF Q Stealth Muffler KTM SX 200/250 EXC MXC SX XC XCW 300 EXC MXC XC XCW QUIET ON THE TRAIL AS WELL AS ON THE SOUND METER NO POWER LOSS MORE PACKING VOLUME-LONGER TIME BETWEEN REPACKS USFS APPROVED SPARK ARRESTOR AMA AND FIM ENDURO LEGAL