TOP END PISTON & GASKET KIT 78MM KTM EXC-F 250 17-19, ATHENA P5F0780078001A, SET A

Athena 78mm Top End Piston and Gasket Kit

This Athena Top End Piston Kit combines a high-performance forged piston with a complete top-end gasket set, engineered for optimal engine performance and reliability. Athena meticulously develops and tests all piston technologies and materials in-house, alongside the complete design of compatible gaskets, ensuring a perfectly tuned kit for superior results.

Key Features:

• Forged 4-Stroke Piston: Manufactured using advanced numerical control (CNC) machines from a special high-performance aluminum alloy with high silicon content, providing OE-level reliability with enhanced resistance and performance.
• Performance Enhancement: Some piston skirts feature a molybdenum disulfide coating applied via screen printing to reduce friction, boosting performance and durability.
• Premium Piston Rings: Includes Japanese-made piston rings with wear-resistant coatings (PVD or chromium nitride) designed to minimize friction with the cylinder for higher performance and increased lifespan.
• Reliable Gasket Set: Developed with over 40 years of industry experience, Athena gasket kits utilize extensive know-how, continuous technological development, and strict adherence to manufacturer parameters.
• Precision Sealing: Latest generation lasers ensure precise cutting quality for gaskets, and Athena uses advanced surface treatments and material stress-relieving processes to guarantee excellent sealing, especially in critical areas.
• Smooth Operation: The piston's perfectly smooth profile promotes regular airflow and optimal flame propagation for smoother engine operation.

Technical Specifications:

• Piston Bore Diameter: 77.95 mm
• Compression Height: 19.40 mm
• Compression Ratio: 13.9:1
• Displacement: 250 cc
• Number of Piston Rings: 2
• Piston Pin Type: Biconical
• Piston Type: Forged
• Big End Pin Diameter: 16x9x38.2 mm