PISTON KIT 80-82 YZ IT465 86.0, WOSSNER 8265D100 YAMAHA
Wossner piston kit with 86mm bore size (85.92mm actual). Forged construction for high durability and efficient thermal performance. Features an elliptical profile for uniform load distribution under heat and designed for efficient heat transfer. Manufactured in Germany. Specifications include 86mm bore size, 465 cm³ displacement, 82.00 mm stroke, 0.08 mm clearance, 40.00 mm compression height, and 2-stroke compression ratio. Cross-reference OEM part numbers: Piston Kit 8265D100, Lock CW18, Pin WP042, Ring Set RSC8600, Part No. 56-W551_1.00.WO. Weight 546g.
- SKU
- 56-W551_1.00.WO
- Brand
- Wossner
- Availability
- Out of Stock
FULL DESCRIPTION
Wossner 86mm Piston Kit for Yamaha YZ/IT465
This high-performance Wossner piston kit is engineered for durability and optimal thermal management in Yamaha YZ465 and IT465 motorcycles. Manufactured in Germany, the forged piston design ensures exceptional strength and longevity.
Key Features:
- Forged Construction: Provides superior strength and resistance to high temperatures and pressures.
- Elliptical Piston Profile: Designed to evenly distribute thrust loads during thermal expansion, reducing localized stress and preventing piston collapse.
- Efficient Heat Transfer: Facilitates effective heat dissipation from the combustion chamber to the cylinder walls, promoting consistent engine performance.
- Precision Manufacturing: Made in Germany to exacting standards for reliability and fit.
Specifications:
- Bore Size: 86.00mm (Actual: 85.92mm)
- Engine Displacement: 465 cm³
- Stroke: 82.00 mm
- Piston Clearance: 0.08 mm
- Compression Height: 40.00 mm
- Compression Ratio: 2-stroke (compatible with Wossner and OEM specifications)


