FMF Racing PowerCore 4 Spark Arrestor Slip-On Muffler - Hex Slip-On 042387Hi 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
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