52.4mm Cylinder Gasket and Piston Ring Set for CRF125F/CRF125FB, 2014–2023
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Wiseco 4939M08450 84.50mm Standard Bore Piston Kit for Yamaha YFM450
$262.49
In stock
✓ Free Shipping
Forged 84.50mm standard-bore piston kit with 11:1 compression ratio for specified Yamaha YFM450 ATV and UTV applications. Includes piston rings, wrist pin, and circlips.
Price shown is the online purchase price. Free shipping · 30-day return policy
Product Description
The Wiseco 4939M08450 piston kit is a forged 84.50mm standard-bore replacement for specified Yamaha YFM450 applications. The kit includes the piston, piston rings, wrist pin, and circlips. It has an 11:1 compression ratio and is intended for 4-stroke engine rebuilds or replacement service.
Product Specifications
BrandWiseco
Manufacturer Part Number4939M08450
Explicit Manufacturer Part Number4939M08450
Explicit OE/OEM Part Numbersreplacement, 4939M08450, compression
Bore Size84.50mm
Compression Ratio11:1
ConstructionForged
Included ComponentsPiston, piston rings, wrist pin, circlips
Motorcycle Compatibility
| Year | Make | Model | Power / Engine | Variant |
|---|---|---|---|---|
| 2003 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke | |
| 2004 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke | |
| 2005 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke | |
| 2006 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke | |
| 2006 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2006 | Yamaha | YXR450F Rhino 450 | 4-stroke | |
| 2007 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2007 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2007 | Yamaha | YXR450F Rhino 450 | 4-stroke | |
| 2008 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2008 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2008 | Yamaha | YXR450F Rhino 450 | 4-stroke | |
| 2009 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2009 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2009 | Yamaha | YXR450F Rhino 450 | 4-stroke | |
| 2010 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2010 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2011 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2011 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2012 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2012 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2013 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2013 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2014 | Yamaha | YFM450 Grizzly 4x4 Auto | 4-stroke | |
| 2014 | Yamaha | YFM450FX Wolverine 4x4 | 4-stroke | |
| 2018 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke | |
| 2019 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke | |
| 2020 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke | |
| 2021 | Yamaha | YFM450F Kodiak Auto 4x4 | 4-stroke |
Always compare the part number, dimensions, specifications, and compatibility details with your original part before ordering.
