PISTON KIT YZ85 YZ80 48.50, WOSSNER 8188D150 YAMAHA MX

Wossner Piston Kit 8188D150 is a forged piston built for Yamaha YZ80 models from 1993 to 2001, featuring a 48.50mm bore (+1.50 US Bore). Manufactured in Germany to high standards, this piston offers robust strength, efficient heat management, and an elliptical profile that provides consistent thrust load distribution, minimising pressure points and reducing the risk of piston collapse.

Features

• High-strength forged piston for durability under extreme operating conditions

• Elliptical shape ensures uniform bearing surface during heat expansion

• Optimised for heat transfer from combustion chamber to cylinder walls

• Manufactured with precision in Germany

Specifications

• Bore: 48.50 mm

• Actual Piston Diameter: 48.45 mm

• Stroke: 47.80 mm

• Displacement: 82 cm³

• Clearance: 0.05 mm

• Compression Height: 26.00 mm

• Wossner Compression Ratio: 2-stroke

• OEM Compression Ratio: 2-stroke

• Dome Volume: Not specified

• Theoretical Weight: Not specified

Cross-Reference OEM Part Numbers

• Wossner Piston: 8188D150

• Lock: CW14

• Pin: WP058

• Ring Set: RSB4850

• Rod: P2008

• Internal Part No: 56-W646+150.WO

Vehicle Fitments

• 1993 Yamaha YZ80

• 1994 Yamaha YZ80

• 1995 Yamaha YZ80

• 1996 Yamaha YZ80

• 1997 Yamaha YZ80

• 1998 Yamaha YZ80

• 1999 Yamaha YZ80

• 2000 Yamaha YZ80

• 2001 Yamaha YZ80