PISTON KIT 88-92 YZ80 48.00, WOSSNER 8187DA YAMAHA MX, 39K-11611-00-00

The Wossner 8187DA piston kit is designed for Yamaha YZ80 models from 1988 to 1992, featuring a standard bore size of 48.00 mm. Manufactured in Germany using forged construction, it ensures high durability and efficient thermal performance. The elliptical piston design allows for uniform load distribution during thermal expansion, reducing localised pressure points and minimising the risk of piston collapse. This kit includes all necessary components for reliable engine rebuilding.

Features

• Forged piston construction for high strength and longevity

• Designed for efficient heat transfer to cylinder walls

• Elliptical profile minimises thermal expansion stress

• Helps prevent piston deformation or failure under load

• Manufactured in Germany with precision engineering

Specifications

• Bore Size: 48.00 mm

• Actual Bore Diameter: 47.95 mm

• Stroke: 45.60 mm

• Display Displacement: 82 cm³

• Clearance: 0.05 mm

• Compression Ratio (Wossner and OEM): 2-stroke

• Compression Height: 27.00 mm

Cross-Reference OEM Part Numbers

• 39K-11611-00-00

• 569M04800

Cross-Reference Wossner Part Numbers

• Piston Kit: 8187DA

• Lock: CW12

• Pin: WP091

• Ring Set: RSB4800

• Part No.: 56-W569+000.WO

Vehicle Fitments

• Yamaha YZ80 (1988–1992)