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The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain
1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory
FMF EXTREME and since 1973 have been about pushing the boundaries inside of the FMF Factory and the gnarliest of trails
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-Use with FMF or Stock OEM Header
Powercore 4 HEX 042309 Size:OS The FMF Gnarly pipe focusesWhen designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability all at a price that won't break the bank. Overall increase in power and torque. Durable stainless steel and aluminum construction. Space Age internal packing material for maximum longevity. Internal shape of core
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