Cylinder Works 11004-K01 Big Bore Cylinder Kit, 68.00 mm, 11.7:1 Compression for 2007-2009 Honda CRF150R

Upgrade the top-end performance of your Honda CRF150R with the Cylinder Works 11004-K01 Big Bore Cylinder Kit. Designed for a 68.00 mm bore and 11.7:1 compression ratio, this complete kit is engineered to provide dependable performance while maintaining a factory-style appearance. The cylinder is nickel silicon carbide plated for extended service life, improved heat management, and durable bore protection.

The Cylinder Works kit includes the cylinder, matched Vertex piston kit, and required gaskets for installation. The piston and cylinder are precisely matched to support longevity, performance, and reduced engine noise. This kit is designed as a direct replacement for the original top-end components, and no machining is needed for standard installation. The top-end gasket kit does not include valve stem seals, so existing seals should be inspected and replaced as necessary during assembly.

Fitment includes the 2007, 2008, and 2009 Honda CRF150R, as well as the 2007, 2008, and 2009 Honda CRF150RB Expert. Replacement pistons, gaskets, and ring sets are available separately for future maintenance. Verify engine specifications and installation requirements before ordering to ensure compatibility with your motorcycle.

Features:

• Complete big bore cylinder kit for increased top-end performance
• 68.00 mm bore with 11.7:1 compression ratio
• Includes cylinder, matched Vertex piston kit, and gaskets
• Nickel silicon carbide plated cylinder for extended service life
• Factory-style cylinder appearance
• No machining required for standard installation
• Matched piston and cylinder help promote longevity, performance, and reduced engine noise
• Top-end gasket kit does not include valve stem seals
• Replacement piston, gasket, and ring sets are available
• Fits 2007-2009 Honda CRF150R and CRF150RB Expert models