![ATHENA Piston Kit - 47.45 mm - Yamaha YZ85 [S4C04750005A]](https://cdn11.bigcommerce.com/s-2wrnp2lk/images/stencil/1280x1280/products/186195/196168/parts-09310976__70176.1787931535.jpg?c=2 "ATHENA Piston Kit - 47.45 mm - Yamaha YZ85 [S4C04750005A]")
![ATHENA Piston Kit - 47.45 mm - Yamaha YZ85 [S4C04750005A]](https://cdn11.bigcommerce.com/s-2wrnp2lk/images/stencil/500x659/products/186195/196168/parts-09310976__70176.1787931535.jpg?c=2 "ATHENA Piston Kit - 47.45 mm - Yamaha YZ85 [S4C04750005A]")
Piston Kit - 47.45 mm - Yamaha YZ85
Features
- High resistance to mechanical and thermal stresses
- Made from special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston
- Has been tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate it performance even in the most extreme conditions
Specifications
- Compression Ratio: Stock
- Units: Kit
- Bore Size: 47.45 mm
- Riding Style: Off-Road
- Displacement: 85 cc
- Piston Head Shape: Domed
- Piston Material: 4032 Aluminum Alloy
- Type: A
- Engine Type: 2-Stroke
- Product Name: Piston Kit
- Style: Cast
Manufacturer Part Number: S4C04750005A
Yes
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