The FMF Powercore 4 Muffler is a performance-focused exhaust component designed for select Yamaha four-stroke off-road motorcycles. Manufacturer part number 044222 and vendor part number 044222 identify this muffler for fitment on 2003–2005 Yamaha YZ450F models and 2003–2006 Yamaha WR450F models. Verify the motorcycle model and year before ordering to ensure proper compatibility.
Constructed with a stainless steel exterior and lightweight aluminum components, the FMF Powercore 4 is built to provide durability while supporting efficient exhaust flow. Its internal core uses FMF Hi-Flo technology, while the Hi-Flo modular end cap helps promote improved sonic evacuation. These design elements support increased exhaust flow and performance for demanding off-road riding.
The muffler includes space-age internal packing engineered for extended packing life and a removable spark arrestor for trail and off-road applications where approved spark-arresting equipment is required. The Powercore 4 Muffler is a practical replacement or upgrade for riders seeking a durable FMF exhaust solution with model-specific Yamaha fitment.
Features:
- Construction: Stainless steel body with lightweight aluminum components
- Packing: Space-age internal packing designed for extended packing life
- End cap: Hi-Flo modular end cap
- Core design: Internal core shaped with FMF Hi-Flo technology
- Exhaust flow: Enhanced sonic evacuation supports higher flow and increased power
- Spark arrestor: Includes a removable spark arrestor
- Fitment: Fits 2003–2005 Yamaha YZ450F and 2003–2006 Yamaha WR450F models
- Brand: FMF
- Manufacturer part number: 044222
- Vendor part number: 044222
Fitment:
2003 Yamaha WR450F
2003 Yamaha YZ450F
2004 Yamaha WR450F
2004 Yamaha YZ450F
2005 Yamaha WR450F
2005 Yamaha YZ450F
2006 Yamaha WR450F