PISTON KIT 88-07 YFS200 67.00, WOSSNER 8101D100 YAMAHA ATV

Wossner 8101D100 Piston Kit 67mm Bore (+1.00mm Oversize):

Wossner 8101D100 forged piston kit is designed for high-performance applications in Yamaha YFS200 Blaster models (1988–2006). This 67mm (+1.00mm) oversize piston is engineered to optimise combustion heat transfer, prevent piston collapse, and improve engine durability. Manufactured in Germany, it features an elliptical design for even thrust load distribution and uniform bearing surface under high thermal expansion.

Features

• Forged piston design enhances strength and durability

• Superior heat transfer from combustion chamber to cylinder walls

• Elliptical piston shape reduces localised pressure

• Designed to resist piston collapse under high stress

• Made in Germany

Specifications

• Bore Size: 67.00 mm

• Actual Bore Diameter: 66.94 mm

• Stroke: 57.00 mm

• Displacement: 199 cm³

• Clearance: 0.06 mm

• Compression Height: 29.90 mm

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

Cross-Reference OEM Part Numbers

• Piston Kit: 8101D100

• Lock: CW16

• Pin: WP027

• Ring Set: RSB6700 (x2)

• Rod: P2030

Vehicle Fitments

• Yamaha YFS200 Blaster (1988–2006)