WOSSNER 67.5mm FORGED PISTON KIT A, KTM 250 SX 1995

Wossner forged piston kit with a 67.50mm bore (67.44mm actual) is designed for KTM GS250 and SX250 models from 1995. This piston offers exceptional strength and thermal efficiency, utilising an elliptical design that provides a more consistent bearing surface under thermal expansion. Manufactured in Germany, it reduces localised pressure and evenly distributes thrust loads to protect against piston collapse during operation.

Features

• Forged for high strength and durability

• Efficient heat transfer from combustion chamber to cylinder wall

• Elliptical design ensures even bearing surface under thermal stress

• Reduces risk of localised pressure points and piston collapse

• Manufactured in Germany

Specifications

• Bore Size: 67.50mm (Actual: 67.44mm)

• Compression Height: 29.70mm

• Clearance: 0.06mm

• Stroke: 69.50mm

• Displacement: 249 cm³

• Wossner Compression Ratio: 2-stroke

• OEM Compression Ratio: 2-stroke

Cross-Reference OEM Part Numbers

• Piston Kit: 8014DA

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6750 x2

Vehicle Fitments

• KTM GS250 (1995)

• KTM SX250 (1995)