The Cylinder Works Standard Bore High-Compression Cylinder Kit is a complete top-end solution for select Honda CRF250R and CRF250X models. Designed for dependable replacement performance, this kit includes a cylinder, matched high-compression piston kit, and required gaskets. The 78.00 mm standard-bore configuration and 13.4:1 compression ratio help restore engine performance while maintaining a stock-style appearance.
Each kit uses a Vertex piston matched to the cylinder to support long service life, consistent performance, and reduced engine noise. The cylinder is nickel silicon carbide plated for enhanced durability and wear resistance. This replacement kit is designed for standard-bore applications and requires no machine work when used with the appropriate compatible engine components.
Fitment includes 2004-2007 Honda CRF250R and 2004-2009 Honda CRF250X models. The kit is manufactured by Cylinder Works and identified by manufacturer part number 10001-K01HC and vendor part number 422-10001KH. For installation, verify engine condition, application compatibility, and compression requirements before service. The included top-end gasket kit does not include valve stem seals. Replacement pistons, gaskets, and ring sets are available separately for future maintenance.
Features:
- Complete standard-bore high-compression kit
- 78.00 mm standard-bore cylinder configuration
- 13.4:1 compression ratio
- Includes cylinder, matched Vertex piston kit, and gaskets
- Nickel silicon carbide-plated cylinder for extended service life
- Stock-style cylinder appearance
- No machine work needed for compatible standard-bore applications
- Top-end gasket kit does not include valve stem seals
- Replacement piston, gasket, and ring sets available
- Fits 2004-2007 Honda CRF250R
- Fits 2004-2009 Honda CRF250X
- Brand: Cylinder Works
- Manufacturer part number: 10001-K01HC
- Vendor part number: 422-10001KH
Fitment:
2004 Honda CRF250R
2004 Honda CRF250X
2005 Honda CRF250R
2005 Honda CRF250X
2006 Honda CRF250R
2006 Honda CRF250X
2007 Honda CRF250R
2007 Honda CRF250X
2008 Honda CRF250X
2009 Honda CRF250X
2010 Honda CRF250X
2011 Honda CRF250X
2012 Honda CRF250X
2013 Honda CRF250X
2014 Honda CRF250X
2015 Honda CRF250X
2016 Honda CRF250X
2017 Honda CRF250X