TOP END PISTON & GASKET KIT 77MM YAMAHA WR/YZ 250 16-18, ATHENA P5F0770187009C, SET C
Athena Top End Piston Kit includes a forged 4-stroke piston with a Ø 76.97 mm bore diameter and a top end gasket kit. Pistons are made from a special high-performance aluminum alloy with high silicon content for reliability, resistance, and excellent performance. Some pistons have a molybdenum disulfide coating on the skirts to reduce friction. The kit includes two piston rings made in Japan with wear-resistant coatings (PVD or chromium nitride) for increased durability. Athena gasket kits are developed with extensive experience and technological advancements, utilizing laser cutting for precision and surface treatments for improved sealing. Technical features include a bore diameter of 76.97 mm, compression height of 20.20 mm, compression ratio of 13.5:1, displacement of 250 cc, and 2 segments. The piston pin type is standard and the piston type is forged.
- SKU
- 56-T1006.C_ATH
- Brand
- Athena
- Availability
- In Stock (1)
FULL DESCRIPTION
Athena Top End Piston and Gasket Kit
This Athena Top End Piston Kit provides a perfectly matched forged 4-stroke piston and top end gasket kit for optimal engine performance and reliability. Athena meticulously studies, develops, and tests all piston technologies and materials in-house, while also engineering compatible gaskets for a seamless integration. This kit ensures high performance and maximum dependability after a piston replacement.
Key Features:
- Forged Piston Construction: Made from a special high-performance aluminum alloy with a high silicon content, offering enhanced durability and excellent performance comparable to original equipment.
- Advanced Manufacturing: Pistons are produced using state-of-the-art numerical control (CNC) machines with a reverse extrusion process.
- Friction Reduction: Some piston skirts feature a molybdenum disulfide coating applied by screen printing to further reduce friction, enhancing performance and lifespan.
- High-Quality Piston Rings: Included piston rings are Made in Japan and feature wear-resistant coatings (PVD or chromium nitride) for increased longevity and reduced friction with the cylinder.
- Reliable Gasket Kit: Based on over 40 years of industry experience, Athena gaskets are developed with constant technological advancement and produced to strict manufacturer parameters.
- Precision Cutting: Latest generation lasers are used to guarantee perfect cutting quality for the gaskets.
- Optimized Sealing: Athena utilizes a wide range of raw materials, applies surface treatments to correct irregularities, and employs material stress-relieving processes to improve sealing in critical areas.
Technical Specifications:
- Piston Type: Forged
- Bore Diameter: 76.97 mm
- Compression Ratio: 13.5:1
- Number Of Segments: 2
- Piston Pin Type: Standard
- Big End Pin Diameter: 16x9,5x38 mm
- Compression Height: 20.20 mm
- Displacement: 250 cc