PISTON KIT 08-09 WR250X 77 HC, FORGED WOSSNER 8772DA
Wossner forged Pro Series piston kit with a 77.00mm bore and 76.96mm diameter. This piston features superior strength and design with an optimized heat transfer to cylinder walls and an elliptical design for uniform load distribution. It has a high compression ratio of 13.50:1 compared to the OEM 11.80:1. Manufactured in Germany. Bore: 77.00mm, Diameter: 76.96mm, Display (cm³): 249, Stroke (mm): 53.60, Clearance (mm): 0.04, Dome Volume (cm³): -4.50, Compression Height (mm): 22.20. Includes Lock P/N: CW17, Pin P/N: WP083, and Ring Set P/N: 770XAS-2.
- SKU
- 56-W239.A.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wossner Forged Piston Kit - High Performance for Yamaha WR250X
Upgrade your Yamaha WR250X with this Wossner Pro Series forged piston kit, engineered for exceptional strength and high performance. Manufactured in Germany, this piston kit is designed to optimize engine efficiency and durability.
Key Features:
- Forged Construction: Provides superior strength and resistance to extreme operating conditions, ensuring longevity and reliability.
- Optimized Heat Transfer: Facilitates efficient heat transfer to cylinder walls, promoting stable combustion temperatures and preventing premature wear.
- Elliptical Design: This advanced design ensures a uniform bearing surface when the piston expands under heat, which reduces localized pressure and evenly distributes thrust loads. This prevents piston collapse and promotes smoother engine operation.
- High Compression Ratio: Achieves a 13.50:1 compression ratio (compared to OEM 11.80:1), significantly increasing power output and throttle response.
- German Engineering: Precision-manufactured in Germany for the highest quality and performance standards.
Specifications:
- Bore: 77.00mm
- Diameter: 76.96mm
- Engine Displacement: 249 cm³
- Stroke: 53.60mm
- Piston Clearance: 0.04mm
- Wossner Compression Ratio: 13.50:1
- OEM Compression Ratio: 11.80:1
- Dome Volume: -4.50 cm³
- Compression Height: 22.20mm
Included Components:
- Wossner Piston (Part Number: 8772DA)
- Lock Ring (Part Number: CW17)
- Piston Pin (Part Number: WP083)
- Ring Set (Part Number: 770XAS-2)
