PISTON KIT 06-09 CRF250R X 78, FORGED WOSSNER 8656DA, 13101-KRN-850

Wossner 78.00mm Forged High-Compression Piston Kit

Enhance your engine's performance with the Wossner 78.00mm high-compression forged piston kit. Engineered in Germany, this piston is designed for optimal heat transfer, ensuring efficient cooling of the combustion chamber. Its advanced elliptical design creates a uniform bearing surface, which reduces localized pressure and distributes thrust loads evenly. This prevents piston collapse and contributes to greater engine longevity.

Key Features:

• High-compression design for increased engine power
• Forged construction for superior strength and durability
• Optimized heat transfer for effective combustion chamber cooling
• Elliptical piston shape for even load distribution and prevention of collapse
• Precision manufactured in Germany

Specifications:

• Bore Size: 78.00mm
• Actual Bore Diameter: 77.96mm
• Displacement: 249 cm³
• Stroke: 52.20mm
• Clearance: 0.04mm
• Wossner Compression Ratio: 13.50:1
• OEM Compression Ratio: 12.90:1
• Dome Volume: -0.90 cm³
• Compression Height: 24.00mm
• Theoretical Weight: 19.00g

Included Components:

• Gasket Part Number: D4004
• Lock Part Number: CW16
• Pin Part Number: WP059
• Ring Set Part Number: 780XAS

Cross-Reference OEM Part Numbers:

• 13101-KRN-850
• Wossner Part Number: 8656DA