PISTON KIT 76-79 YZ250 70.50, WOSSNER 8179D050 YAMAHA

Wossner forged piston kit with a 70.50mm bore and 70.44mm diameter, designed for Yamaha models. Manufactured in Germany, 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

• Forged construction for superior strength
• Optimized heat transfer for efficient combustion
• Elliptical design for uniform load distribution
• Manufactured in Germany

Specifications

• Bore: 70.50mm
• Diameter: 70.44mm
• Display (cm³): 246
• Stroke (mm): 64.00
• Clearance (mm): 0.06
• Compression Ratio: 2-Stroke
• Compression Height (mm): 33.00

Cross-Reference OEM Part Numbers

• Wossner Piston Yamaha YZ250 (PN# 8179D050)
• Lock P/N: CW18
• Pin P/N: WP033
• Ring Set P/N: RSB7050 x 2

Vehicle Fitments

• Yamaha YZ250 (1976-1979)
• Yamaha IT250 (1978-1980)
• Yamaha TY250 (1974-1978)
• Yamaha MC250 (1973-1975)
• Yamaha DT250 (1974-1979)