The Cylinder Works 10002-K01 Standard Bore Cylinder Kit is designed for reliable top-end replacement on 2002–2006 Honda CRF450R motorcycles. This complete kit includes a cylinder, matched piston kit, and gaskets to simplify installation and restore engine performance. With a 12.1:1 compression ratio, it is suited to riders seeking dependable performance while maintaining a stock-style cylinder appearance.
The cylinder is nickel silicon carbide plated for extended service life, improved durability, and consistent operating performance. Cylinder Works matches the cylinder with a Vertex piston to promote longevity, performance, and reduced engine noise. The standard-bore configuration is intended as a direct replacement and requires no machine work when used with compatible factory components and proper installation procedures.
Fitment: This kit fits 2002, 2003, 2004, 2005, and 2006 Honda CRF450R models. The included top-end gasket kit does not include valve stem seals, so those components should be inspected and replaced separately if needed. Replacement pistons, gaskets, and ring sets are available for future servicing. Manufactured by Cylinder Works and identified by manufacturer part number 10002-K01, this kit provides a practical solution for rebuilding the standard-bore top end while retaining a stock-like appearance.
Features:
- Complete standard-bore cylinder kit
- 12.1:1 compression ratio for 2002–2006 Honda CRF450R models
- Includes cylinder, Vertex piston kit, and gaskets
- Nickel silicon carbide-plated cylinder for extended service life
- Matched Vertex piston helps support durability, performance, and reduced engine noise
- Stock-style cylinder appearance
- No machine work required for compatible standard-bore applications
- Top-end gasket kit does not include valve stem seals
- Replacement piston, gasket, and ring sets are available
- Fits 2002 Honda CRF450R
- Fits 2003 Honda CRF450R
- Fits 2004 Honda CRF450R
- Fits 2005 Honda CRF450R
- Fits 2006 Honda CRF450R
Fitment:
2002 Honda CRF450R
2003 Honda CRF450R
2004 Honda CRF450R
2005 Honda CRF450R
2006 Honda CRF450R