
The Story
Wossner forged piston kit with a 90.01mm bore, designed for Kawasaki KFX400 and KLX400 models. This high-compression piston is engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision.
Features
- High-compression forged piston for increased performance
- Optimized heat transfer to cylinder walls
- Elliptical design for uniform bearing surface and even thrust load distribution
- Manufactured in Germany
Specifications
- Bore: 90.01mm (+0.01mm oversize)
- Standard size piston (PN# 8566DB)
- Lock Part Number: CW20
- Pin Part Number: WP029
- Ring Set Part Number: 900XSY
- Rod Part Number: P4009
Vehicle Fitments
- Kawasaki KFX400 (2003-2006)
- Kawasaki KLX400 (2003-2006)

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Wossner forged piston kit with a 90.01mm bore, designed for Kawasaki KFX400 and KLX400 models. This high-compression piston is engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision.
Features
- High-compression forged piston for increased performance
- Optimized heat transfer to cylinder walls
- Elliptical design for uniform bearing surface and even thrust load distribution
- Manufactured in Germany
Specifications
- Bore: 90.01mm (+0.01mm oversize)
- Standard size piston (PN# 8566DB)
- Lock Part Number: CW20
- Pin Part Number: WP029
- Ring Set Part Number: 900XSY
- Rod Part Number: P4009
Vehicle Fitments
- Kawasaki KFX400 (2003-2006)
- Kawasaki KLX400 (2003-2006)




















