PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DB 08-13 77mm
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Wossner forged piston kit with a 77.01mm bore and 76.97mm diameter. This 2-ring piston is engineered for high performance, featuring superior strength and design. Manufactured in Germany, it ensures optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Features include forged construction, optimized heat transfer, elliptical design for uniform load distribution, 2-ring piston design, and increased compression ratio. Specifications: Bore 77.01mm, Diameter 76.97mm, Display 249 cm³, Stroke 53.60mm, Clearance 0.04mm, Wossner Compression Ratio 14.10:1, OEM Compression Ratio 13.50:1, Dome Volume -5.00 cm³, Compression Height 22.50mm. Cross-reference OEM Part Numbers: Wossner Piston Yamaha YZ250F (PN# 8713DB), Lock P/N: CW16, Pin P/N: WP059, Ring Set P/N: 770XAS, Rod P/N: P4005.
- SKU
- 56-W241+00B.WO
- Brand
- Wossner
- Availability
- In Stock (3)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- Variant Id
- 255160
FULL DESCRIPTION
Wossner Forged Piston Kit 77.01mm - High Performance Upgrade
Enhance the performance of your motorcycle with the Wossner Forged Piston Kit. This premium piston is precision engineered for demanding applications, offering superior strength and durability. Manufactured in Germany, this kit is designed to optimize your engine's power output and efficiency.
Key Features:
- Forged Construction: Provides exceptional strength and resistance to extreme pressures and temperatures.
- Optimized Heat Transfer: Designed to efficiently transfer heat to the cylinder walls, promoting consistent performance and longevity.
- Elliptical Design: Ensures uniform load distribution across the piston surface, even under high heat, preventing localized stress and potential piston collapse.
- 2-Ring Piston: Engineered for performance applications, contributing to improved sealing and power delivery.
- Increased Compression Ratio: Features a higher compression ratio (14.10:1) compared to OEM (13.50:1) for a noticeable boost in power.
- German Engineering: Manufactured to the highest standards in Germany, guaranteeing quality and reliability.
Specifications:
- Bore Size: 77.01mm
- Piston Diameter: 76.97mm
- Engine Displacement: 249 cm³
- Stroke: 53.60mm
- Piston to Cylinder Clearance: 0.04mm
- Wossner Compression Ratio: 14.10:1
- OEM Compression Ratio: 13.50:1
- Dome Volume: -5.00 cm³
- Compression Height: 22.50mm
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Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
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