PISTON KIT SET/4 YZF R6 01-05, WOSSNER K8831DA-4 YAMAHA

This piston kit is designed for Yamaha YZF R6 models from 2001 to 2005. It includes a set of four Wossner forged pistons with a standard bore size of 65.50mm, engineered for performance and durability. The pistons feature an elliptical design to evenly distribute thrust loads under thermal expansion, reducing stress and improving structural reliability. Manufactured in Germany, this kit maintains OEM compression standards and fits within the standard 600cc engine class.

Features

• Set of 4 forged Wossner pistons

• Standard bore size (65.50mm, actual piston diameter 65.44mm)

• Elliptical design for consistent thrust load distribution

• Engineered for efficient combustion heat transfer

• Made in Germany

Specifications

• Part Number: K8831DA-4

• Bore Size: 65.50mm (actual piston size 65.44mm)

• Displacement: 600cc

• Display Displacement: 600 / 617 / 636 cm³

• Stroke: 44.50mm

• Clearance: 0.06mm

• Wossner Compression Ratio: OEM

• OEM Compression Ratio: 12.40:1

• Dome Volume: -0.10cm³

• Compression Height: 21.20mm

Cross-Reference OEM Part Numbers

• Clip: CW16

• Piston Pin: WP036

• Replacement Ring Set: 655XKS

Vehicle Fitments

• Yamaha YZF R6 2001–2005