PISTON KIT 90-94 KTM250 67.50, WOSSNER 8005DA FORGED

Wossner Forged Piston Kit 67.50mm Bore – KTM GS250 / SX250 (1990–1994)
This Wossner forged piston kit is designed for KTM GS250 and SX250 models from 1990 to 1994. With a standard bore size of 67.50 mm and a piston diameter of 67.44 mm, this component is tailored for 2-stroke engines requiring high-performance durability and thermal efficiency. The elliptical profile ensures consistent load distribution under heat-induced expansion, minimising stress and potential failure. Precision-forged and made in Germany.

Features

• Forged construction for superior strength and reliability

• Designed to optimise heat transfer to cylinder walls

• Elliptical shape for uniform pressure distribution under piston expansion

• Manufactured in Germany for consistent quality

Specifications

• Bore Size: 67.50 mm

• Piston Diameter: 67.44 mm

• Engine Displacement: 249 cm³

• Stroke: 69.50 mm

• Clearance: 0.06 mm

• Compression Height: 29.70 mm

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

Cross-Reference Wossner Part Numbers

• Piston Kit: 8005DA

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6750 x 2

Vehicle Fitments

• KTM GS250 (1990–1994)

• KTM SX250 (1990–1994)