CYLINDER KIT 09-12 CRF450 99mm, WORKS 478cc 11006-K01

Cylinder Works +3mm Big Bore Complete Cylinder Kit (11006-K01) for Honda CRF450R (2009-2012) increases displacement to 478cc with a 99mm bore and 12.0:1 compression ratio. This direct bolt-on kit is ready to install without requiring replating or additional machining. Built to deliver enhanced performance while maintaining OEM fit and reliability.

Features:

• Big bore cylinder increases displacement to 478cc (+3mm).
• Bore size: 99mm with a compression ratio of 12.0:1.
• Nickel Silicon Carbide plating for extended durability.
• Honed to exact specifications for seamless piston installation.
• Direct bolt-on design requires no machining or replating.
• Complete kit includes gaskets, cylinder, piston, rings, pin, and clips.
• Optional use with Hot Rods #4193 increases displacement to 500cc.

Specifications:

• Displacement: 478cc
• Bore size: 99mm
• Compression ratio: 12.0:1
• Piston assembly: Vertex #23534

Included Items:

• Cylinder
• Piston
• Rings
• Pin and clips
• Gaskets

Cross-Reference OEM Part Numbers:

• Honda: 12100-MEN-A30
• Honda: 12100-MEN-A50

Vehicle Fitment:

• Honda CRF450R (2009-2012)