PISTON KIT +4.00mm BIG BORE 82.00mm HONDA 2004 - 2015 CRF R X ATHENA S5F08200001A

Athena Forged Piston Kit +4.00mm Big Bore 82.00mm

Upgrade your engine's performance with the Athena Forged Piston Kit. This kit features a precisely engineered forged piston with an 81.95mm bore diameter, designed to work seamlessly with Athena Big Bore Cylinders. Crafted from a high-performance aluminum alloy with a high silicon content, this piston delivers exceptional durability and reliability, comparable to OEM standards.

The piston undergoes precision CNC machining, ensuring dimensional tolerances of less than 0.01mm for optimal fit and function. Its smooth profile is engineered for efficient flame propagation and reduced friction, while select piston skirts feature a molybdenum disulfide coating to further enhance performance and longevity. The included piston rings, manufactured in Japan with advanced wear-resistant coatings, minimize friction and maximize durability.

Key Features:

• Forged piston with an 81.95mm bore diameter for a significant displacement increase.
• Constructed from a high-performance aluminum alloy with high silicon content for superior strength and heat resistance.
• Precision CNC-machined to achieve tight tolerances of under 0.01mm.
• Molybdenum disulfide coating on select piston skirts reduces friction for improved efficiency.
• Optimized for use with Athena Big Bore Cylinders.
• Includes high-durability piston rings with wear-resistant coatings.
• Complete kit includes piston, pin, circlips, and piston rings.

Specifications:

• Bore Diameter: 81.95mm
• Compression Height: 19.00mm
• Compression Ratio: 13.1:1
• Displacement: 280cc
• Net Weight: 0.23 kg
• Number of Segments: 2
• Piston Pin Diameter: 16x10x44.5mm
• Piston Type: Forged
• Piston Pin Type: Standard

Cross-Reference OEM Part Numbers:

• Rings: S41316089