Wossner Forged Piston Kit 67.40mm Bore – Kawasaki KX250 / KDX250 (1990–1994)
This Wossner forged piston kit is designed for Kawasaki KX250 and KDX250 models from 1990 to 1994. With a standard bore size of 67.40 mm and a piston diameter of 67.34 mm, it offers high strength and reliable performance for 2-stroke engines. Its forged construction and elliptical design support optimal combustion heat transfer and balanced load distribution, minimising wear and improving long-term reliability. Manufactured in Germany.

Features

• Forged piston construction for enhanced durability and high performance

• Efficient thermal conductivity for effective heat dissipation

• Elliptical geometry for uniform load distribution and reduced stress concentration

• Manufactured in Germany for superior quality control

Specifications

• Bore Size: 67.40 mm

• Piston Diameter: 67.34 mm

• Engine Displacement: 250 cm³

• Stroke: 70.00 mm

• Clearance: 0.06 mm

• Compression Height: 37.00 mm

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

Cross-Reference OEM Part Numbers

• 13001-1345

• 607M06740

Cross-Reference Wossner Part Numbers

• Piston Kit: 8109DA

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6740 x 2

• Rod: P2022

Vehicle Fitments

• 1990 Kawasaki KX250

• 1991 Kawasaki KX250

• 1991 Kawasaki KDX250

• 1992 Kawasaki KDX250

• 1993 Kawasaki KDX250

• 1994 Kawasaki KDX250