Restore dependable top-end performance with the Cylinder Works 10010-K03 Standard Bore Cylinder Kit, designed for select Honda CRF450R, CRF450RX and CRF450R W.E. models. This complete kit includes a standard-bore cylinder, matched piston kit and required top-end gaskets for a streamlined installation. The piston is designed with a 13.5:1 compression ratio to support strong engine response and performance while maintaining reliable operation.
The Cylinder Works cylinder is styled to look like the original equipment component and features a nickel silicon carbide-plated bore for extended service life, consistent performance and improved wear resistance. The matched Vertex piston helps promote longevity, reduce engine noise and provide dependable fitment. No machine work is required for installation when used with the specified standard-bore application. The top-end gasket kit does not include valve stem seals.
This Cylinder Works kit fits the 2021 Honda CRF450RX, 2021 Honda CRF450R W.E., 2021 Honda CRF450R, 2022 Honda CRF450R, 2022 Honda CRF450R W.E., 2022 Honda CRF450RX, 2023 Honda CRF450R, 2023 Honda CRF450R W.E., 2023 Honda CRF450RX and 2024 Honda CRF450R. Replacement pistons, gaskets and ring sets are available separately for future service needs. Manufacturer and vendor part number: Cylinder Works 10010-K03.
Features:
- Complete standard-bore cylinder kit for select Honda CRF450R, CRF450RX and CRF450R W.E. models
- 13.5:1 compression ratio supports responsive engine performance
- Includes cylinder, matched Vertex piston kit and top-end gaskets
- Nickel silicon carbide-plated cylinder bore promotes extended service life
- Cylinder design closely matches the original equipment appearance
- Matched piston helps support longevity, performance and reduced engine noise
- No machine work required for specified standard-bore applications
- Top-end gasket kit does not include valve stem seals
- Replacement piston, gasket and ring sets are available
- Brand: Cylinder Works
- Manufacturer part number: 10010-K03
- Vendor part number: 10010-K03
Fitment:
2021 Honda CRF450R
2021 Honda CRF450R W.E.
2021 Honda CRF450RX
2022 Honda CRF450R
2022 Honda CRF450R W.E.
2022 Honda CRF450RX
2023 Honda CRF450R
2023 Honda CRF450R W.E.
2023 Honda CRF450RX
2024 Honda CRF450R
2024 Honda CRF450R W.E.
2024 Honda CRF450RX
2025 Honda CRF450R
2025 Honda CRF450R W.E.
2025 Honda CRF450RX