![VERTEX Piston Kit - 66.35 mm - Yamaha YZ250/X [22584B]](https://cdn11.bigcommerce.com/s-2wrnp2lk/images/stencil/1280x1280/products/185830/195802/parts-09100970__47663.1787867870.jpg?c=2 "VERTEX Piston Kit - 66.35 mm - Yamaha YZ250/X [22584B]")
![VERTEX Piston Kit - 66.35 mm - Yamaha YZ250/X [22584B]](https://cdn11.bigcommerce.com/s-2wrnp2lk/images/stencil/500x659/products/185830/195802/parts-09100970__47663.1787867870.jpg?c=2 "VERTEX Piston Kit - 66.35 mm - Yamaha YZ250/X [22584B]")
Piston Kit - 66.35 mm - Yamaha YZ250/X
Features
- Piston is heat treated with a T-5 hardening and tempering cycle
- Piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
- Gravity-cast aluminum alloy (not forged) with 18% silicone content
- Cast OE replacement piston
- Kit includes piston, rings, wrist pin and circlips
Specifications
- Compression Ratio: 13.4:1
- Piston Diameter: 66.35 mm
- Piston Material: Aluminum Alloy
- Piston Material: Cast
- Product Name: Piston Kit
- Cylinder Diameter: 66.40 mm
- Riding Style: Off-Road
- Engine Type: 2-Stroke
- Model: Cast Replica
- Units: Kit
- Displacement: 250 cc
- Skirt Coating: Molybdenum Disulphite
Manufacturer Part Number: 22584B
Yes
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