PISTON KIT 87-09 YFZ350 68.50, WOSSNER 8075D450 YAMAHA ATV
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This Wossner forged piston kit features a 68.50mm bore and is a +4.50 oversize component. Manufactured in Germany, the piston has an elliptical design that distributes thrust loads evenly, reducing the risk of localized pressure points and piston collapse. It also supports effective heat transfer from the combustion chamber to the cylinder wall for enhanced reliability under high-performance conditions. Features include forged piston construction for increased structural integrity, an elliptical design for uniform bearing surface under heat expansion, and efficient combustion chamber heat transfer to cylinder walls. The kit includes a piston, pin, locks, and ring set. Specifications include a bore size of 68.50mm, actual bore of 68.44mm, stroke of 54.00mm, clearance of 0.06mm, compression ratio for 2-stroke, compression height of 36.00mm, and displacement of 347 cm³. Cross-reference OEM part numbers include Piston Kit Part No: 56-W513+450.WO, Lock P/N: CW16, Pin P/N: WP027, and Ring Set P/N: RSB6850 (x2).
- SKU
- 56-W513+450.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 68.5mm
- Variant Id
- 256639
FULL DESCRIPTION
Wossner Forged Piston Kit 68.50mm Oversize
This Wossner forged piston kit features a 68.50mm bore and is a +4.50 oversize component specifically designed for select Yamaha two-stroke engines. Manufactured in Germany, the piston boasts an innovative elliptical design. This design is engineered to distribute thrust loads evenly across the piston surface, effectively reducing the risk of localized pressure points and preventing piston collapse. Furthermore, the construction facilitates efficient heat transfer from the combustion chamber directly to the cylinder walls, enhancing overall reliability and performance, especially under demanding high-performance conditions.
Key Features:
- Forged piston construction for superior structural integrity and durability.
- Elliptical piston design ensures a uniform bearing surface, even under extreme heat expansion.
- Optimized for efficient heat transfer from the combustion chamber to the cylinder walls for improved reliability.
- Proudly made in Germany, adhering to high manufacturing standards.
- Complete kit includes the piston, high-strength pin, secure locks, and a precision ring set.
Specifications:
- Bore Size: 68.50mm
- Actual Bore: 68.44mm
- Stroke: 54.00mm
- Piston Clearance: 0.06mm
- Compression Ratio: 2-stroke (Wossner and OEM)
- Compression Height: 36.00mm
- Displacement: 347 cm³
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