TOP END PISTON & GASKET KIT 77MM YAMAHA WR/YZ 250F 08-13, ATHENA P5F0770039007A, SET A
ATHENA Top End Piston Kit includes a forged 4-stroke piston and the top end gasket kit. Piston features a 76.96 mm bore diameter, 22.30 mm compression height, 13.5:1 compression ratio, and 3 piston rings. The piston is forged from a special high-performance aluminum alloy with high silicon content and may have a molybdenum disulfide coating on the skirts to reduce friction. Piston rings are Made in Japan with wear-resistant coatings (PVD or chromium nitride). Gasket kits are developed with extensive experience, constant technological development, and precise laser cutting. Big End Pin Diameter: 16x10x42 mm. Piston Pin Type: Standard. Displacement: 250 cc.
- SKU
- 56-T1003.A_ATH
- Brand
- Athena
- Availability
- In Stock (1)
FULL DESCRIPTION
Athena Top End Piston and Gasket Kit - 77mm Bore
This comprehensive Athena Top End Piston Kit combines a high-performance forged piston with a complete top-end gasket set, offering a perfect synergy for essential engine components. Engineered for optimal performance and maximum reliability, this kit is designed to deliver exceptional results for your motorcycle.
Athena meticulously designs, develops, and tests all piston technologies and materials in-house, ensuring compatibility and precision with their engineered gasket sets. This integrated approach guarantees a perfectly tuned engine after piston replacement, enhancing both performance and durability.
Key Features:
- Forged Piston: Crafted from a special high-performance aluminum alloy with a high silicon content for superior reliability and increased resistance.
- Advanced Manufacturing: Pistons are produced using state-of-the-art numerical control (CNC) machines.
- Surface Treatment: Some piston skirts feature a molybdenum disulfide coating applied by screen printing to reduce friction and improve performance and durability.
- High-Performance Piston Rings: Rings are Made in Japan with wear-resistant coatings (PVD or chromium nitride) for increased retention and extended lifespan, resulting in less friction with the cylinder.
- Reliable Gasket Set: Based on over 40 years of industry experience, Athena gasket kits are developed with constant technological advancement and manufactured to strict OEM parameters.
- Precision Gasket Cutting: Latest generation lasers ensure perfect cutting quality for all gaskets.
- Material Expertise: Utilizes a wide availability of raw materials, performs surface treatments to compensate for irregularities, and follows material stress-relieving processes for improved sealing in critical areas.
Technical Specifications:
- Piston Type: Forged
- Bore Diameter: 76.96 mm
- Compression Height: 22.30 mm
- Compression Ratio: 13.5:1
- Displacement: 250 cc
- Number Of Segments: 3
- Piston Pin Type: Standard
- Big End Pin Diameter: 16x10x42 mm