TOP END PISTON & GASKET KIT 77MM YAMAHA YZ 250F 19-23, ATHENA P5F0770212009B, SET B
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ATHENA Top End Piston Kit with forged 4-stroke piston and top end gasket kit. Includes forged 4-stroke piston with a 76.96 mm bore diameter and a top end gasket kit. Piston is made from a special high-performance aluminum alloy with high silicon content. Some pistons feature a molybdenum disulfide coating on the skirts to reduce friction. Includes 2 piston rings made in Japan with wear-resistant coatings (PVD or chromium nitride). Gasket kits are produced using the latest generation lasers for precise cutting. Technical features: Big End Pin Diameter 16x9.5x38 mm, Bore Diameter 76.96 mm, Compression Height 20.20 mm, Compression Ratio 13.5:1, Displacement 250 cc, Number Of Segments 2, Piston Pin Type Standard, Piston Type Forged.
- SKU
- 56-T1007.B_ATH
- Brand
- Athena
- Availability
- In Stock (1)
- Variant Id
- 309794
FULL DESCRIPTION
Athena Top End Piston Kit 77mm for Yamaha YZ 250F (2019-2023)
This Athena Top End Piston Kit is engineered to provide a perfect combination of essential engine components for optimal performance and reliability. The kit includes a high-quality forged 4-stroke piston and a comprehensive top-end gasket set, designed to work seamlessly together for superior results.
Athena develops and tests its pistons internally, utilizing state-of-the-art numerical control (CNC) machines. The pistons are crafted from a special, high-performance aluminum alloy with a high silicon content, ensuring OE-level reliability alongside enhanced durability and performance. Some pistons feature a molybdenum disulfide coating on their skirts to reduce friction, further boosting performance and longevity.
The included piston rings, manufactured in Japan, are equipped with wear-resistant coatings (PVD or chromium nitride) to minimize friction with the cylinder and increase durability. This kit ensures maximum sealing and reliability, benefiting from Athena's extensive experience and commitment to technological development.
Key Features:
- Forged 4-stroke piston for enhanced performance and durability.
- High-performance aluminum alloy with high silicon content.
- Includes a complete top-end gasket kit for perfect sealing.
- Piston skirts may feature molybdenum disulfide coating to reduce friction.
- Japanese-made piston rings with wear-resistant coatings (PVD or chromium nitride).
- Designed for precise fit and maximum reliability.
Technical Specifications:
- Bore Diameter: 76.96 mm
- Compression Height: 20.20 mm
- Compression Ratio: 13.5:1
- Displacement: 250 cc
- Number Of Segments: 2
- Piston Type: Forged
- Piston Pin Type: Standard
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