PISTON KIT/2 KAW EX650 NINJA, WOSSNER K8721DA-2 3-Ri 2009

The Wossner K8721DA-2 piston kit is a standard-size forged piston set designed for the 2009 Kawasaki EX650 Ninja. With an 84.00mm bore and 12.6:1 compression ratio, these pistons are engineered for performance and durability in high-compression four-stroke applications. Manufactured in Germany, this kit includes pistons, clips, and pins but requires the use of OEM rings.

Features

• Forged high-performance pistons with PTFE-coated skirts

• Elliptical design ensures even load distribution and thermal expansion

• Enhanced heat transfer from combustion chamber to cylinder walls

• Polished crown surfaces to help resist detonation and prevent hot spots

• Designed to use OEM ring sets

• Includes piston pins and clips

Specifications

• Bore size: 84.00mm (Standard)

• Measured bore: 83.95mm

• Compression ratio: 12.6:1

• Quantity: 2 pistons per kit

• Made in Germany

Cross-Reference OEM Part Numbers

• Part No. 56-W9869.000.WO

• Clip: CW19

• Piston Pin: WP028

• Ring Set: Use OEM

Vehicle Fitments

• Kawasaki EX650 Ninja 2009