PISTON KIT 83MM KAW KX 250/SUZ RM 250 04-08, ATHENA S5F08300003A 290CC BIG BORE
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ATHENA Forged Racing Piston Kit for Big Bore Cylinder. Bore Diameter: 82.95 mm. Compression Ratio: 12.8:1. Displacement: 250 cc. Made from a special high-performance aluminum alloy with high silicon content. Features cutting-edge CNC machining for tolerances less than 0.01 mm. Some pistons have a molybdenum disulfide coating on the skirts to reduce friction. Piston rings are produced in Japan with wear-resistant coatings for increased durability and adaptability. Kit includes piston, pin, circlips, and piston rings. All components are replaceable. Intended for competitive use only for products with increased displacement and power. Technical features include Bore Diameter (mm) 82.95, Compression Ratio 12.8:1, Displacement (cc) 250, Piston Type Forged.
- SKU
- 56-K104.83.PIA
- Brand
- Athena
- Availability
- In Stock (2)
Fitments (8)
| Make | Model | Year |
|---|---|---|
| KAWASAKI | KX 250F | 2004 |
| KAWASAKI | KX 250F | 2005 |
| KAWASAKI | KX 250F | 2006 |
| KAWASAKI | KX 250F | 2007 |
| KAWASAKI | KX 250F | 2008 |
| SUZUKI | RM-Z 250 | 2004 |
| SUZUKI | RM-Z 250 | 2005 |
| SUZUKI | RM-Z 250 | 2006 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- Variant Id
- 252613
FULL DESCRIPTION
Athena 83mm Forged Piston Kit for Big Bore Cylinders
Experience enhanced performance and durability with the Athena Forged Racing Piston. Engineered by Athena, a leader in motorcycle spare parts for over 40 years, this piston is designed for high-performance off-road applications. Crafted using advanced reverse extrusion and cutting-edge CNC machining, it achieves dimensional tolerances of less than 0.01 mm for precision fitment. The special high-performance aluminum alloy with high silicon content ensures reliability comparable to original equipment while offering superior resistance and excellent performance. The smooth piston profile promotes efficient flow and perfect flame propagation.
For reduced friction and increased longevity, some piston skirts feature a molybdenum disulfide coating applied via screen printing. Athena's rigorous R&D process, including dynamometer and track testing in extreme conditions, guarantees the highest quality standards. This piston kit is specifically designed for Athena Big Bore cylinder kits and includes piston rings manufactured in Japan with wear-resistant coatings (PVD or chromium nitride) to boost retention and durability, ensuring optimal cylinder liner adaptation even at low tangential loads.
This comprehensive kit includes the piston, pin, circlips, and piston rings, with all components designed for replacement and interchangeability.
Key Features:
- Type: Forged Racing Piston
- Bore Diameter: 82.95 mm
- Compression Ratio: 12.8:1
- Displacement: 250cc (intended for Big Bore applications)
- Material: Special high-performance aluminum alloy with high silicon content
- Coating: Some skirts feature molybdenum disulfide coating for reduced friction
- Piston Rings: Made in Japan with wear-resistant PVD or chromium nitride coatings
- Kit Contents: Piston, pin, circlips, and piston rings
- Manufacturing: Engineered in Italy, tested on dynamometer and track
Important Note: Products designed for increased displacement and power beyond standard road regulations are intended exclusively for competitive use. Athena disclaims responsibility for any use contrary to national regulations.
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