WOSSNER 86.5mm PISTON KIT YAMAHA YZ465 1980-1981, IT465 1981-1982

This Wossner piston kit features an 86.50mm bore size (86.42mm actual) and is designed for Yamaha YZ465 (1981–1982) and IT465 (1980–1981) models. Forged in Germany for strength and reliability, the piston is engineered with an elliptical profile that distributes thrust loads evenly during heat expansion, minimising localised pressure and reducing the risk of piston collapse.

Features

• Forged construction for enhanced durability

• Elliptical design supports uniform load distribution under thermal expansion

• Optimised for efficient heat transfer to cylinder walls

• Manufactured in Germany

Specifications

• Bore Size: 86.50mm (86.42mm)

• Display: 465 cm³

• Stroke: 82.00 mm

• Clearance: 0.08 mm

• Compression Height: 40.00 mm

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

Cross-Reference OEM Part Numbers

• Piston Kit: 8265D150

• Lock: CW18

• Pin: WP042

• Ring Set: RSC8650

• Part No.: 56-W551_1.50.WO

Vehicle Fitments

• Yamaha YZ465 1981

• Yamaha YZ465 1982

• Yamaha IT465 1980

• Yamaha IT465 1981

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.