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FMF - Powercore 4 Hex Yamaha Slip-On
-Overall increase in power and torque.
-Durable stainless steel and aluminum construction.
-Space Age internal packing material for maximum longevity.
-Internal shape of core uses Hi-Flo technology.
-Enhanced sonic evacuation provides for higher flow and increased power.
-Includes removable spark arrestor.
-Can be used with FMF or Stock OEM Header