PISTON KIT 86-04 XR250 77.00, FORGED WOSSNER 8793D400
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Wossner forged piston kit with 77.00 mm bore size, +4.00 mm oversize. Manufactured in Germany, this piston offers superior strength and heat transfer efficiency. The elliptical design ensures even load distribution, reducing localized pressure and preventing piston collapse. Features forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface and reduced wear. Designed for 4-stroke engines. Specifications include: Bore Size 77.00 mm (+4.00 mm oversize), Actual Bore 76.94 mm, Stroke 59.50 mm, Clearance 0.06 mm, Compression Height 25.00 mm, Dome Volume +6.00 cm³, Compression Ratio 10.50:1 (OEM 9.30:1), Displacement 249 cm³. Wossner Part No. 8793D400. Cross-Reference OEM Part Numbers: Lock P/N CW17, Pin P/N WP090, Ring Set P/N 770XDS, OEM Piston 13101-KCE-670. Weight: 352 grams.
- SKU
- 56-W4466+400.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77mm
- Variant Id
- 255656
FULL DESCRIPTION
Wossner Forged Piston Kit - 77.00mm Oversize
This Wossner forged piston kit is engineered for superior performance and durability in 4-stroke motorcycle engines. Manufactured in Germany, it features advanced design elements to enhance reliability and power output.
Key Features
- Forged Construction: Provides exceptional strength and resistance to extreme temperatures and pressures, ensuring longevity under demanding conditions.
- Optimized Heat Transfer: Designed for efficient heat dissipation, contributing to consistent engine performance and preventing overheating.
- Elliptical Design: The piston's elliptical shape ensures an even load distribution across the cylinder wall, reducing localized stress and minimizing wear for a uniform bearing surface. This design also helps prevent piston collapse.
- High-Quality Materials: Crafted from premium materials for robust performance and extended service life.
Specifications
- Bore Size: 77.00 mm (+4.00 mm oversize)
- Actual Bore: 76.94 mm
- Stroke: 59.50 mm
- Clearance: 0.06 mm
- Compression Height: 25.00 mm
- Dome Volume: +6.00 cm³
- Compression Ratio: 10.50:1
- OEM Compression Ratio: 9.30:1
- Displacement: 249 cm³
- Made in Germany
Included Components
- Wossner Piston Part No.: 8793D400
- Lock Ring P/N: CW17
- Pin P/N: WP090
- Ring Set P/N: 770XDS
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