Wossner forged piston kit with a 90.01mm bore (89.95mm actual) is designed for Suzuki LT-Z400, DRZ400E, and DRZ400S models. Engineered for strength and optimal heat transfer, the piston features an elliptical design that ensures even load distribution, reducing localized pressure and preventing piston collapse. Manufactured in Germany, it maintains OEM compression specifications.

Features

• Forged construction for durability and high performance


• Optimized heat transfer to cylinder walls for improved efficiency


• Elliptical design ensures uniform bearing surface and prevents piston collapse


• Manufactured in Germany for high-quality standards

Specifications

• Bore Size: 90.01mm (89.95mm actual)


• Display (Displacement): 398 cm³


• Stroke: 62.60mm


• Clearance: 0.06mm


• Compression Ratio: OEM specification (12.20:1)


• Dome Volume: -2.00 cm³


• Compression Height: 25.30mm

Cross-Reference OEM Part Numbers

• Piston Kit: 8563DB


• Lock: CW20


• Pin: WP029


• Ring Set: 900XSY


• Rod: P4009

Vehicle Fitments

• Suzuki LT-Z400 (2002-2012)


• Suzuki DRZ400E (2000-2014)


• Suzuki DRZ400S (2000-2014)