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)

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.