PISTON KIT 83-87 YZ250 68.50, WOSSNER 8133D050 YAMAHA MX

Wossner 68.50mm Forged Piston Kit for Yamaha YZ250

Enhance the performance and durability of your Yamaha YZ250 with this precision-engineered Wossner forged piston kit. Designed as a 0.50mm oversize replacement, this kit is manufactured in Germany to exacting standards for superior quality and reliability.

The advanced forged construction provides exceptional strength, ensuring this piston can withstand the demands of high-performance riding. Its innovative elliptical design is crucial for maintaining uniform bearing surface contact, even under extreme thermal expansion. This intelligent design minimizes localized pressure points and evenly distributes thrust loads, effectively preventing piston collapse and promoting longevity.

Furthermore, this Wossner piston is optimized for efficient heat transfer from the combustion chamber directly to the cylinder walls. This characteristic is vital for high-performance two-stroke engines, contributing to consistent power delivery and overall engine health.

Key Features:

• Forged piston construction for superior strength and extended lifespan.
• Elliptical design ensures consistent surface contact during thermal expansion.
• Minimizes localized stress and distributes thrust loads evenly for improved durability.
• Optimized for efficient heat transfer from the combustion chamber to cylinder walls.
• Precision manufactured in Germany for uncompromising quality.

Specifications:

• Bore Size: 68.50mm
• Actual Piston Diameter: 68.44mm
• Engine Displacement: 246 cm³
• Stroke: 68.00mm
• Piston Clearance: 0.06mm
• Compression Height: 36.00mm
• Compression Ratio Type: 2-stroke