FMF Powercore 4 Hex Stainless Steel Muffler | 045521 ATV/UTV 2011 - YFM400FBI Big Bear

2011 - YFM400FBI Big Bear 4WD [IRS]

Super strong18 gauge steel construction makes it GNARLY

and Non-flammable

2022 - 350 RR (RE)

With Permanent anti-fog

FMF Powercore 4 Hex Stainless Steel Muffler | 045521 ATV/UTV 2011 - YFM400FBI Big BearWhen 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