PISTON KIT B 77MM HONDA CRF 250 10-13, ATHENA S5F07680001B
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ATHENA Forged Piston Kit B, 77mm bore diameter. Features a high-performance aluminum alloy with high silicon content, CNC machining with dimensional tolerances of less than 0.01 mm, and molybdenum disulfide coating on some piston skirts to reduce friction. Includes piston, pin, circlips, and piston rings. Piston rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) for increased durability. Big End Pin Diameter: 16x10x41.5mm. Compression Height: 19.00mm. Compression Ratio: 13.2:1. Displacement: 250cc. Net Weight: 0.19Kg. Number Of Segments: 2. Piston Pin Type: Standard. Piston Type: Forged.
- SKU
- 56-W950.B.ATH
- Brand
- Athena
- Availability
- In Stock (4)
Fitments (8)
| Make | Model | Year |
|---|---|---|
| HONDA | CRF 250 | 2010 |
| HONDA | CRF 250 | 2011 |
| HONDA | CRF 250 | 2012 |
| HONDA | CRF 250 | 2013 |
| HONDA | CRF 250R | 2010 |
| HONDA | CRF 250R | 2011 |
| HONDA | CRF 250R | 2012 |
| HONDA | CRF 250R | 2013 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 76.80mm
- Variant Id
- 289755
FULL DESCRIPTION
Athena Forged Piston Kit B - 77mm
This Athena forged piston kit is engineered for high-performance off-road motorcycles. Manufactured using advanced reverse extrusion and cutting-edge CNC machining, these pistons achieve exceptional dimensional accuracy, with tolerances less than 0.01 mm. Constructed from a specialized high-silicon aluminum alloy, Athena pistons offer enhanced strength and durability, matching the reliability of original equipment while boosting performance.
The piston's smooth profile promotes optimal airflow and efficient flame propagation. Some applications feature a molybdenum disulfide coating on the piston skirt, applied via screen printing, to further reduce friction, thereby increasing performance and extending component life.
Designed and tested in Italy by Athena's R&D department, each piston undergoes rigorous engine dynamometer testing and track validation to ensure performance and reliability under extreme conditions. This piston kit includes the piston, pin, circlips, and piston rings, all of which are replaceable and interchangeable.
The included piston rings, produced in Japan with wear-resistant coatings (PVD or chromium nitride), are designed to minimize friction with the cylinder liner, leading to higher performance and increased durability. These rings conform precisely to the cylinder liner even under low tangential load.
Key Features:
- Forged piston for superior strength and performance.
- High-silicon aluminum alloy construction for durability.
- Precision CNC machining for tight tolerances.
- Optimized profile for efficient airflow and combustion.
- Molybdenum disulfide coating (on select applications) to reduce friction.
- High-quality piston rings for reduced friction and enhanced durability.
- Kit includes piston, pin, circlips, and piston rings.
Technical Specifications:
- Bore Diameter: 76.76 mm
- Compression Height: 19.00 mm
- Compression Ratio: 13.2:1
- Displacement: 250 cc
- Number Of Segments: 2
- Piston Type: Forged
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