
The Story
Wossner forged piston kit designed for superior strength and high compression performance. Engineered for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany.
Features
- Forged construction for enhanced durability
- Optimized heat transfer for improved performance
- Elliptical design prevents localized pressure and piston collapse
- High compression design for increased efficiency
Specifications
- Bore: 99.94 mm
- Piston Size: 100.00 mm
- Displacement: 644 cm³
- Stroke: 82.00 mm
- Clearance: 0.06 mm
- Wossner Compression Ratio: High Compression (HC)
- OEM Compression Ratio: 9.50:1
- Dome Volume: -6.70 cm³
- Compression Height: 28.70 mm
Cross-Reference OEM Part Numbers
- Lock: CW23
- Pin: WP024
- Ring Set: 1000XSY
Vehicle Fitments
- Suzuki DR 650 SE (1996-2009)

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Wossner forged piston kit designed for superior strength and high compression performance. Engineered for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany.
Features
- Forged construction for enhanced durability
- Optimized heat transfer for improved performance
- Elliptical design prevents localized pressure and piston collapse
- High compression design for increased efficiency
Specifications
- Bore: 99.94 mm
- Piston Size: 100.00 mm
- Displacement: 644 cm³
- Stroke: 82.00 mm
- Clearance: 0.06 mm
- Wossner Compression Ratio: High Compression (HC)
- OEM Compression Ratio: 9.50:1
- Dome Volume: -6.70 cm³
- Compression Height: 28.70 mm
Cross-Reference OEM Part Numbers
- Lock: CW23
- Pin: WP024
- Ring Set: 1000XSY
Vehicle Fitments
- Suzuki DR 650 SE (1996-2009)




















