Cylinder Works +3mm Big Bore Cylinder Kit (11006-K02) for Honda CRF450R (2013-2016) increases displacement to 478cc with a 12.5:1 compression ratio. This direct bolt-on kit is ready to install, requiring no replating or additional machining. Designed for reliability and performance, the kit features matched components to ensure compatibility and longevity.

Features:

• Big bore cylinder increases displacement to 478cc (+3mm).


• Compression ratio: 12.5:1.


• Nickel Silicon Carbide plating for enhanced durability and reduced wear.


• Includes matched Vertex piston for optimal performance and reduced engine noise.


• Direct bolt-on design requires no machining or replating.


• Complete kit includes gaskets, cylinder, piston, rings, pin, and clips.


• Replacement Vertex pistons, rings, pins, and clips available separately.


• Made in the USA.

Specifications:

• Displacement: 478cc


• Compression ratio: 12.5:1


• Piston assembly: Vertex #23924

Included Items:

• Cylinder


• Piston


• Rings


• Pin and clips


• Gaskets

Vehicle Fitment:

• Honda CRF450R (2013-2016)