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When designing the PowerCore 4, FMF looked at their 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.