PISTON KIT 88-07 YFS200 66.00, WOSSNER 8101DA YAMAHA ATV

The Wossner 8101DA piston kit is designed for Yamaha YFS200 Blaster models from 1988 to 2006, featuring a standard 66.00 mm bore. Manufactured in Germany from high-strength forged material, this piston provides excellent durability and heat transfer efficiency. Its elliptical design promotes a uniform bearing surface during thermal expansion, helping to prevent localised pressure and reduce the risk of piston collapse. The kit includes all essential components for a reliable engine rebuild.

Features

• Forged piston construction for increased strength and thermal performance

• Enhanced heat transfer from combustion chamber to cylinder wall

• Elliptical profile distributes thrust loads evenly under expansion

• Minimises localised stress and reduces the likelihood of piston failure

• Manufactured in Germany with precision engineering

Specifications

• Bore Size: 66.00 mm

• Actual Bore Diameter: 65.94 mm

• Stroke: 57.00 mm

• Display Displacement: 199 cm³

• Clearance: 0.06 mm

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

• Compression Height: 29.90 mm

Cross-Reference Wossner Part Numbers

• Piston Kit: 8101DA

• Lock: CW16

• Pin: WP027

• Ring Set: RSB6600 (Quantity: 2)

• Rod: P2030

• Part No.: 56-W573+000.WO

Vehicle Fitments

• Yamaha YFS200 Blaster (1988–2006)