| Size | 78mm |
|---|---|
| Product Type | Pistons & Kits |
| Product Group | Engine |
| Catalogue | DIRT |
| Alternate SKU's | 13101-KRN-670 |
| Piston Diameter | 78.00 |
| Bore Diameter | |
| Piston Grade | |
| Compression Ratio |
PISTON KIT 04-09 CRF250 HC 78, FORGED WOSSNER 8590DA, 13101-KRN-670
Wossner 78.00mm 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: 78.00mm
- Actual Bore Diameter: 77.96mm
- 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
- 13101-KRN-670
- Part No: 56-W4852.A.WO
- Wossner Part No: 8590DA
Vehicle Fitments
- Honda CRF250R (2004 – 2009)
- Honda CRF250X (2004 – 2009)
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