When designing the PowerCore 4 HEX, 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.
• 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

Fitment:

Make	Model	Year
GAS GAS	EC250F	21
GAS GAS	EC350F	21
HUSQVARNA	FE250	20-21
HUSQVARNA	FE350	20-22
HUSQVARNA	FE350 ROCKSTAR EDITION	21
HUSQVARNA	FE450	20-23
HUSQVARNA	FE501	20-22
KTM	350 XCF-W	20-22
KTM	450 XCF-W	20-23
KTM	500 XCF-W	20-23