PISTON KIT B 77MM HONDA CRF 250 16-17, ATHENA S5F07680003B

Athena Forged Piston Kit B - 77mm Bore

Enhance your motorcycle's performance and durability with the Athena Forged Piston Kit B. Crafted using advanced reverse extrusion and cutting-edge CNC machining, this piston ensures exceptional dimensional accuracy, with tolerances under 0.01 mm. It is constructed from a specialized high-performance aluminum alloy rich in silicon, offering reliability comparable to Original Equipment (OE) pistons while delivering superior resistance and performance.

The piston features a perfectly smooth profile designed for consistent flow and optimal flame propagation. For reduced friction and improved performance and longevity, some piston skirts are treated with a molybdenum disulfide coating applied via screen printing.

Athena engineers, based in Italy, implement advanced technical solutions and maintain the highest quality standards, often exceeding OE production. Each piston undergoes rigorous testing on engine dynamometer benches and on the track to validate its performance under extreme conditions. This piston kit includes piston rings engineered in Japan with wear-resistant coatings (PVD or chromium nitride) to maximize durability and retainment, ensuring perfect adaptation to the cylinder liner even with low tangential load.

This kit contains the piston, pin, circlips, and piston rings. All components are replaceable and interchangeable.

Key Features:

• Type: Forged Piston
• Bore Diameter: 76.76 mm
• Compression Height: 19.20 mm
• Compression Ratio: 13.5:1
• Displacement: 250 cc
• Piston Pin Type: Biconical
• Number of Piston Rings: 2
• Big End Pin Diameter: 16x10x43.5 mm
• Net Weight: 0.19 Kg
• Includes piston, pin, circlips, and piston rings
• High-performance aluminum alloy with high silicon content
• Molybdenum disulfide coating on select piston skirts to reduce friction
• Piston rings produced in Japan with wear-resistant coatings