PISTON KIT 87-90 TRX250 68.00, WOSSNER 8189D200 HONDA ATV

The Wossner forged piston kit with a 68 mm bore (67.94 mm actual) is engineered for performance and durability, specifically designed for Honda ATC250R and TRX250R models from 1987 to 1990. This forged piston is designed to ensure optimal combustion chamber heat transfer and uniform bearing surface distribution under expansion. Manufactured in Germany, this piston ensures high-quality material standards and precision engineering.

Features

• Forged construction offers superior strength and heat resistance

• Elliptical design provides a uniform bearing surface, minimising localised pressure

• Distributes thrust loads evenly to prevent piston collapse

• Precision-machined for performance applications

• Made in Germany

Specifications

• Bore Size: 68 mm (67.94 mm)

• Piston Part Number: 8189D200

• Lock Part Number: CW18

• Pin Part Number: WP033

• Ring Set Part Number: RSB6800 x 2

• Display (Displacement): 246 cm³

• Stroke: 72.00 mm

• Clearance: 0.06 mm

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

• Compression Height: 33.00 mm

Cross-Reference OEM Part Numbers

• 56-W562.P8.WO

Vehicle Fitments

• 1987 Honda ATC250R

• 1987 Honda TRX250R

• 1988 Honda ATC250R

• 1988 Honda TRX250R

• 1989 Honda ATC250R

• 1989 Honda TRX250R

• 1990 Honda ATC250R

• 1990 Honda TRX250R