Wiseco 4379M07200 Kawasaki Forged Piston Kit - KZ900/KZ1000 72mm 9.0 1 2835XC

The Wiseco 4379M07200 is a forged high-performance piston kit engineered specifically for Kawasaki KZ900 and KZ1000 engines. Featuring a 72.00mm (2.835") bore and a 9.0:1 compression ratio, this kit delivers a reliable performance upgrade while maintaining a streetable compression level — making it a popular choice for both classic restoration builds and performance street applications.

Wiseco pistons are manufactured from high-silicon, low-expansion forged aluminum alloy, providing superior tensile strength, reduced weight, improved heat transfer, and extended service life compared to cast alternatives. Each piston is precision-machined on CNC turning centers to ensure consistent sizing and a perfect finish.

Kit Includes:

• Forged aluminum piston
• High-quality piston rings
• Wrist pin
• Circlips

Key Specifications:

• Bore Size: 72.00mm (2.835")
• Compression Ratio: 9.0:1
• Ring Code: 2835XC
• Material: High-silicon forged aluminum alloy
• Manufactured in the USA (Mentor, OH)

Important Notes:

• This is an oversize piston — cylinder sleeving is required for installation
• Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Wiseco ring sets are application-specific and not interchangeable between ring codes

Wiseco has been producing industry-leading forged pistons since 1941 and is trusted at every level of motorsport competition. The 4379M07200 brings that same proven engineering to classic Kawasaki inline-four applications.