PISTON KIT 08-12 WR250X 77.00, COMP. 13.5:1 WOSSNER 8729DB
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Wossner forged piston kit with a 77.01mm bore and 76.97mm diameter. This piston offers superior strength and design, ensuring 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 for superior strength, optimized heat transfer for efficient combustion, and an elliptical design for uniform load distribution. Manufactured in Germany. Specifications: Bore 77.01mm, Diameter 76.97mm, Display (cm³) 249, Stroke (mm) 53.60, Clearance (mm) 0.04, Wossner Compression Ratio OEM, OEM Compression Ratio 11.80:1, Dome Volume (cm³) -5.90, Compression Height (mm) 22.90. Cross-Reference OEM Part Numbers: Wossner Piston Yamaha WR250X (PN# 8729DB), Lock P/N: CW17, Pin P/N: WP083, Ring Set P/N: 770XAS-2.
- SKU
- 56-W238+00B.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77mm
- Variant Id
- 255148
FULL DESCRIPTION
Wossner Forged Piston Kit for Yamaha WR250X
Upgrade your Yamaha WR250X with this high-performance forged piston kit from Wossner. Manufactured with precision in Germany, this piston is engineered for superior strength and optimal engine performance. Its advanced design ensures efficient heat transfer to the cylinder walls, promoting better combustion and longevity. The unique elliptical shape of the piston provides a consistent bearing surface, even under extreme heat expansion, effectively distributing thrust loads and preventing piston collapse for a smoother, more reliable ride.
Key Features:
- Forged construction for exceptional durability and strength.
- Designed for optimal heat transfer, enhancing combustion efficiency.
- Features an elliptical design that ensures uniform load distribution under heat.
- Precisely manufactured in Germany for quality assurance.
- Reduces localized pressure and evenly distributes thrust loads to prevent piston collapse.
Specifications:
- Bore: 77.01mm
- Diameter: 76.97mm
- Display (cm³): 249
- Stroke (mm): 53.60
- Clearance (mm): 0.04
- Compression Height (mm): 22.90
- Dome Volume (cm³): -5.90
Included Components:
- Wossner Piston (Part Number: 8729DB)
- Lock Ring (Part Number: CW17)
- Piston Pin (Part Number: WP083)
- Ring Set (Part Number: 770XAS-2)
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