TOP END PISTON & GASKET KIT 77MM YAMAHA WR/YZ 250 14-15, ATHENA P5F0770187008C, SET C

Athena Top End Piston and Gasket Kit

Enhance your motorcycle's engine performance and reliability with the Athena Top End Piston and Gasket Kit. This comprehensive kit combines a high-performance forged 4-stroke piston with a perfectly matched top-end gasket set, engineered to work in unison for optimal results.

Athena meticulously studies, develops, and tests all piston technologies and materials in-house. They also engineer the entire development of compatible gaskets, ensuring a perfectly tuned kit for maximum reliability and elevated performance after a piston replacement.

Key Features:

• Forged 4-Stroke Piston: Manufactured using state-of-the-art numerical control (CNC) machines from a special high-performance aluminum alloy with a high silicon content. This ensures reliability comparable to OE pistons while offering increased resistance and excellent performance.
• Optimized Profile: The piston's smooth profile promotes regular flow and perfect flame propagation for improved combustion efficiency.
• Friction Reduction: Some piston skirts feature a molybdenum disulfide coating applied by screen printing, further reducing friction to enhance performance and durability.
• High-Quality Piston Rings: Included piston rings, made in Japan, feature wear-resistant coatings (PVD or chromium nitride) to minimize friction with the cylinder, leading to higher performance and extended durability.
• Reliable Gasket Set: Athena gaskets are built upon extensive industry experience and constant technological development. Produced following strict manufacturer parameters and utilizing latest-generation lasers for precise cutting, these gaskets ensure excellent sealing.
• Advanced Sealing: Athena employs a wide range of raw materials, surface treatments to address irregularities, and material stress-relieving processes to improve sealing in critical areas.
• Kit Includes: Forged piston and top-end gasket set.

Technical Specifications:

• Piston Diameter: 76.98 mm
• Big End Pin Diameter: 16x10x42 mm
• Compression Height: 20.40 mm
• Compression Ratio: 13.5:1
• Displacement: 250 cc
• Number of Rings: 2
• Piston Pin Type: Standard
• Piston Type: Forged

Note: Products designed for displacements and power exceeding road code limits are intended exclusively for competitive use. Athena disclaims all responsibility for any use contrary to national regulations.