PISTON KIT 87-09 YFZ350 66.50, WOSSNER 8075D250 YAMAHA ATV
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This Wossner forged piston kit features a 66.50mm bore size and is designed for high-performance applications. Engineered in Germany, the piston ensures optimised heat transfer, structural integrity, and uniform bearing surface through its elliptical design. It is suited for applications where durability and precision are required. This kit includes a +2.50 oversize piston. Features include forged construction for improved strength and durability, an elliptical design that distributes thrust loads evenly to prevent piston collapse, and enhanced heat transfer from the combustion chamber to cylinder walls. Made in Germany, the kit includes piston, pin, locks, and ring set. Specifications include a bore size of 66.50mm, actual bore of 66.44mm, stroke of 54.00mm, clearance of 0.06mm, compression ratio of 2-stroke, compression height of 36.00mm, and displacement of 347 cm³. Cross-reference OEM part numbers include Piston Kit Part No: 56-W513+250.WO, Lock P/N: CW16, Pin P/N: WP027, and Ring Set P/N: RSB6650 (x2).
- SKU
- 56-W513+250.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 66.5mm
- Variant Id
- 256638
FULL DESCRIPTION
Wossner Forged Piston Kit - 66.50mm Bore
Enhance the performance and durability of your compatible Yamaha two-stroke engine with this high-quality Wossner forged piston kit. Engineered in Germany, this piston is designed for demanding applications, offering superior strength, optimized heat transfer, and precise fitment. The kit includes all necessary components for a complete installation.
Key Features:
- Forged Construction: Provides exceptional strength and longevity for high-performance use.
- Elliptical Piston Design: Ensures even distribution of thrust loads, preventing piston collapse and promoting uniform bearing surfaces.
- Optimized Heat Transfer: Efficiently moves heat from the combustion chamber to the cylinder walls, contributing to consistent engine operation.
- German Engineering: Manufactured to exacting standards for reliability and precision.
- Complete Kit: Includes the piston, wrist pin, piston locks, and a high-quality ring set.
- Oversize Piston: This is a +2.50 oversize piston.
Specifications:
- Bore Size: 66.50mm
- Actual Bore: 66.44mm
- Stroke: 54.00mm
- Clearance: 0.06mm
- Compression Ratio: 2-stroke (Wossner and OEM)
- Compression Height: 36.00mm
- Displacement: 347 cm³
Included Components:
- Piston
- Wrist Pin
- Piston Locks (CW16)
- Ring Set (RSB6650 x2)
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