WOSSNER 67.5mm FORGED PISTON KIT A, KTM 250 2T 1990-1994

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)

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.