When designing the PowerCore 4 HEX, FMF 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 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
HUSABERG	FE250	13-14
HUSABERG	FE350	13-14
HUSABERG	FE501	13-14
HUSQVARNA	FE250	14-16
HUSQVARNA	FE350	14-16
HUSQVARNA	FE450	15-16
KTM	250 SX-F	09-15
KTM	250 XC-F	09,11,13-15
KTM	250 XCF-W	09-10,12-16
KTM	350 SX-F	11-15
KTM	350 XC-F	11-15
KTM	350 XCF-W	12-16
KTM	400 XCW	09-10
KTM	450 EXC	09-11
KTM	450 EXCR	08
KTM	450 SMR	13
KTM	450 SX-F	07-15
KTM	450 SXF FACTORY EDITION	12-14
KTM	450 XCF	09
KTM	450 XC-F	13-15
KTM	450 XCRW	08
KTM	450 XCW	09-10
KTM	450 XC-W	12-16
KTM	500 XCF-W	12-14
KTM	500 XC-W	13-16
KTM	505 SXF	08
KTM	505 XCF	08-09
KTM	530 EXC	09-11
KTM	530 EXCR	08
KTM	530 XCRW	08
KTM	530 XCW	09-10