PISTON KIT 87-07 YFS200 66.25, WOSSNER 8101D025 YAMAHA ATV

Wossner 8101D025 Piston Kit

This Wossner 8101D025 piston kit is precision-manufactured in Germany for enhanced engine performance and longevity. Designed for specific Yamaha ATV models, this kit features a forged piston construction, offering superior strength and excellent heat resistance. The piston's elliptical design ensures even distribution of thrust loads as it expands with heat, minimizing localized pressure and reducing the risk of piston collapse. This kit provides optimal combustion chamber heat transfer to the cylinder wall for efficient operation.

Key Features:

• Forged piston construction for high strength and heat resistance.
• Optimized combustion chamber heat transfer to the cylinder wall.
• Elliptical piston profile ensures a uniform bearing surface under thermal expansion.
• Minimizes localized stress and helps prevent piston collapse.
• Precision-manufactured in Germany.

Specifications:

• Bore Size: 66.25 mm
• Actual Bore Diameter: 66.19 mm
• Stroke: 57.00 mm
• Displacement: 199 cm³
• Clearance: 0.06 mm
• Compression Ratio: 2-stroke (Wossner and OEM)
• Compression Height: 29.90 mm

Kit Components:

• Piston Kit
• Lock (CW16)
• Pin (WP027)
• Ring Set (RSB6625) - Quantity: 2
• Rod (P2030)