PISTON KIT A 82MM HONDA CRF 250 10-17, ATHENA S5F08200002A 280CC BIG BORE, KIT A

Athena Forged Piston Kit 82mm for Honda CRF 250

Upgrade your Honda CRF 250 with this Athena Forged Piston Kit. Engineered for superior performance and durability, this kit is designed to enhance your off-road riding experience.

Athena, a leader in motorcycle spare parts for over 40 years, produces these 4-stroke off-road forged pistons using advanced reverse extrusion and cutting-edge CNC machining. This ensures dimensional tolerances of less than 0.01 mm. Crafted from a special high-performance aluminum alloy with a high silicon content, Athena pistons offer reliability comparable to OE pistons while providing increased resistance and excellent performance.

The smooth piston profile promotes regular flow and perfect flame propagation. Some piston skirts feature a molybdenum disulfide coating applied by screen printing, further reducing friction to improve both performance and longevity. Athena engineers are dedicated to delivering advanced technical solutions and the highest quality standards, matching or exceeding OE production for guaranteed performance and reliability. Each piston is meticulously engineered in Italy by Athena's R&D department, then rigorously tested on engine dynamometer benches and on track to validate its performance under extreme conditions.

This piston kit is specifically designed for Athena Big Bore Cylinders and includes piston rings that minimize friction with the cylinder, resulting in higher performance. The piston rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to enhance durability and retention. These rings conform perfectly to the cylinder liner even at low tangential loads. The complete kit includes the piston, pin, circlips, and piston rings, all of which are replaceable and interchangeable.

Key Features:

• Forged Piston Type: Offers increased strength and durability.
• High-Performance Aluminum Alloy: High silicon content for enhanced resistance and performance.
• Precision Machining: Dimensional tolerances of less than 0.01 mm for optimal fit and function.
• Reduced Friction: May feature molybdenum disulfide coating on skirts for improved performance and durability.
• Advanced Piston Rings: Made in Japan with wear-resistant coatings (PVD or chromium nitride) for increased retention and durability.
• Kit Includes: Piston, pin, circlips, and piston rings.
• Engineered and Tested: Designed in Italy and tested on dynamometers and on track for extreme condition validation.
• Big Bore Specific: Designed for Athena Big Bore Cylinders to achieve increased displacement.

Technical Specifications:

• Big End Pin Diameter: 16x10x44.5 mm
• Bore Diameter: 81.95 mm
• Compression Height: 19.00 mm
• Compression Ratio: 13.5:1
• Displacement: 284 cc
• Number Of Segments: 2
• Piston Pin Type: Standard

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