PISTON KIT 04-09 CRF250 HC 78, WOSSNER 8590DC FORGED
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PISTON KIT 04-09 CRF250 HC 78, WOSSNER 8590DC FORGED is available to order. Please contact us to confirm availability and lead time.
Pickup currently unavailable at Braydon Trailers HQ
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Description
Description
Wossner 78.02mm high-compression forged piston kit is designed for enhanced engine performance. Engineered for optimal heat transfer, it ensures efficient cooling of the combustion chamber. The elliptical design provides a uniform bearing surface, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany for precision and reliability.
Features
- High-compression design for increased engine performance
- Forged construction for enhanced strength and longevity
- Optimized heat transfer for efficient cooling
- Elliptical design prevents piston collapse and ensures even load distribution
- Manufactured in Germany for high-quality standards
Specifications
- Bore Size: 78.02mm
- Actual Bore Diameter: 77.98mm
- Displacement: 249 cm³
- Stroke: 52.20mm
- Clearance: 0.04mm
- Wossner Compression Ratio: 13.90:1
- OEM Compression Ratio: 12.90:1
- Dome Volume: +0.00 cm³
- Compression Height: 19.00mm
- Lock Part Number: CW16
- Pin Part Number: WP059
- Ring Set Part Number: 780XAS
- Rod Part Number: P4001 (2010 - Current)
Cross-Reference OEM Part Numbers
- Part No: 56-W4852.C.WO
- Wossner Part No: 8590DC
Vehicle Fitments
- Honda CRF250R (2004 - 2009)
- Honda CRF250X (2004 - 2009)



