The FMF PowerCore IV Megamax II exhaust system is designed for Yamaha YFZ450 models from 2004-2009 and 2012-2013. Featuring a reverse-cone megaphone design, this performance exhaust can be run open for closed-course riding or equipped with discs for off-road use. Manufacturer part number 044224 and vendor part number 79-6538 identify this FMF system.
Feature: Modular tuning The PowerCore IV uses a modular end cap that allows riders to adjust the powerband to suit riding style, terrain, and performance requirements. The included Hi-Flo 2-inch end cap supports strong airflow and performance, while the optional 1-3/4-inch end cap is designed to provide smoother power delivery. The interchangeable spark arrestor module adds versatility for off-road applications.
Feature: U.S. Forestry approved spark arrestor The spark arrestor configuration helps meet applicable off-road riding requirements when properly installed. This system is intended to deliver performance gains while providing multiple tuning options in a single exhaust platform.
Fitment includes 2004, 2005, 2006, 2007, 2008, and 2009 Yamaha YFZ450 models, as well as 2012 and 2013 Yamaha YFZ450 models. Installation should be completed according to FMF instructions, and all components should be checked for proper clearance and secure attachment before riding. This product is not legal for use in California on pollution-controlled vehicles and is designated for race use in California; a waiver may be available. Verify vehicle fitment and local emissions requirements before purchase or installation.
Features:
- U.S. Forestry approved spark arrestor for applicable off-road riding
- Megamax II reverse-cone megaphone design for versatile performance
- Can be run open for closed-course use or with discs for off-road riding
- Modular end cap system allows tuning of the powerband
- Includes a standard Hi-Flo 2-inch end cap
- Optional 1-3/4-inch end cap supports smoother power delivery
- Interchangeable spark arrestor module provides added versatility
- Fits Yamaha YFZ450 models from 2004-2009 and 2012-2013
- FMF manufacturer part number 044224 and vendor part number 79-6538
- Not legal for California use on pollution-controlled vehicles; race use only in California
Fitment:
2004 Yamaha YFZ450
2005 Yamaha YFZ450
2006 Yamaha YFZ450
2007 Yamaha YFZ450
2008 Yamaha YFZ450
2009 Yamaha YFZ450
2012 Yamaha YFZ450
2013 Yamaha YFZ450