The +3mm Big Bore Cylinder Kit (Part Number: 31001-K01) is a complete upgrade designed for Kawasaki KX250F (2004–2008) and Suzuki RM-Z250 (2004–2006) models. This kit increases the engine displacement to 269cc while maintaining standard compression, offering enhanced performance with a direct bolt-on installation. The Nickel Silicon Carbide plated cylinder ensures durability, and the kit includes all components necessary for a top-end rebuild.

Features:

• (+3mm Big Bore Kit) increases engine displacement to 269cc with standard compression.
• Direct bolt-on installation with no replating required.
• Nickel Silicon Carbide plated cylinder for extended service life.
• Precisely honed to the exact size for effortless piston installation.
• Includes all necessary components for a complete top-end rebuild.

Package Includes:

• Cylinder
• Piston
• Rings
• Pin
• Clips
• Gaskets

Vehicle Compatibility:

• Kawasaki KX250F: 2004–2008
• Suzuki RM-Z250: 2004–2006

Cross-Reference Part Numbers:

• Kawasaki: 11005-0005, 11005-0037, 11005-0069
• Suzuki: K1100-50005, K1100-50037