52.4mm Cylinder Gasket and Piston Ring Set for CRF125F/CRF125FB, 2014–2023
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Cylinder Works 21003-K02 Big Bore Cylinder Kit for Yamaha YFZ 450 R/X
$896.66
In stock
✓ Free Shipping
Cylinder Works 21003-K02 big bore cylinder kit for Yamaha YFZ 450 R 2009–2019 and YFZ 450 X 2010–2011. Includes a cylinder, piston kit, and top-end gasket kit.
Price shown is the online purchase price. Free shipping · 30-day return policy
BrandCylinder Works
MPN / Part Number21003-K02
OEM / OE Number21003-K02
Part TypeBig bore cylinder kit
Product Description
The Cylinder Works 21003-K02 big bore cylinder kit is designed for specified Yamaha YFZ 450 R and YFZ 450 X applications. The kit includes a cylinder, piston kit, and top-end gasket kit. It features a 98mm cylinder diameter, 478cc displacement, and a 12.0:1 compression ratio. Uses Vertex #23403 and replaces Yamaha OEM number 2S2-11311-10-00.
Product Specifications
BrandCylinder Works
Manufacturer Part Number21003-K02
Item Weight4.1 pounds
Model21003-K02
Product Dimensions11.5 x 7.8 x 7.8 inches
Item model number21003-K02
ExteriorPainted
OEM Part Number21003-K02
Explicit Manufacturer Part Number21003-K02
Explicit OE/OEM Part Numbers21003-K02, Numbers, replacement, specifications
Cylinder kit typeBig bore
Compression ratio12.0:1
Cylinder diameter98mm
Displacement478cc
Included componentsCylinder, piston kit, and top-end gasket kit
ReferenceUses Vertex #23403
Exterior finishPainted
Motorcycle Compatibility
| Year | Make | Model | Power / Engine | Variant |
|---|---|---|---|---|
| 2009 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2010 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2010 | Yamaha | YFZ 450 X | 4-Cycle | |
| 2011 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2011 | Yamaha | YFZ 450 X | 4-Cycle | |
| 2012 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2013 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2014 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2015 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2016 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2017 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2018 | Yamaha | YFZ 450 R | 4-Cycle | |
| 2019 | Yamaha | YFZ 450 R | 4-Cycle |
Always compare the part number, dimensions, specifications, and compatibility details with your original part before ordering.
