PISTON KIT 82-83 YZ80 47.50, FORGED WOSSNER 8185D050

Wossner 47.50mm Bore Piston Kit (PN# 8185D050) is designed for Yamaha YZ80 models from 1982 to 1983. This forged piston ensures high strength, efficient heat transfer, and durability. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany, this piston meets OEM compression standards.

Features

• High-strength forged piston for durability and performance
• Optimized heat transfer for efficient combustion
• Elliptical design prevents piston collapse and ensures even load distribution
• Manufactured in Germany

Specifications

• Bore: 47.50mm
• Actual diameter: 47.45mm
• Display (cm³): 79
• Stroke (mm): 55.50
• Clearance (mm): 0.05
• Compression Ratio: OEM
• OEM Compression Ratio: 11.10:1
• Dome Volume (cm³): -0.20
• Compression Height (mm): 22.80

Cross-Reference OEM Part Numbers

• Lock: CW12
• Pin: WP091
• Ring Set: RSB4750

Vehicle Fitments

• Yamaha YZ80 (1982-1983)