Upgrade the top end of your Honda motocross or off-road motorcycle with the Cylinder Works High-Compression Cylinder Kit, part number CW10011K03HC. This complete standard-bore kit is designed for select 2022–2025 Honda CRF250R and CRF250RX models, including the 2025 CRF250RWE. It includes the cylinder, Vertex high-compression piston kit, and the required gaskets for a precise, performance-focused replacement.
The standard-bore configuration is engineered to match the original engine specifications while providing a high-compression ratio of 14.4:1. The cylinder maintains a stock-like appearance and uses a nickel silicon carbide-plated bore for extended service life, consistent performance, and improved durability. The matched Vertex piston helps promote long-term reliability, strong engine response, and reduced operating noise.
Installation is designed to require no machining when used with the appropriate standard-bore application. The top-end gasket kit is included but does not contain valve stem seals. Cylinder Works also offers replacement pistons, gaskets, and ring sets for future service requirements. Verify the motorcycle model, year, and engine specifications before installation to ensure proper fitment.
Fitment: 2022–2025 Honda CRF250R; 2022–2025 Honda CRF250RX; 2025 Honda CRF250RWE.
Features:
- Complete standard-bore high-compression cylinder kit
- Includes cylinder, Vertex piston kit, and gaskets
- 14.4:1 compression ratio for performance-oriented applications
- Nickel silicon carbide-plated cylinder bore for extended durability
- Stock-like cylinder appearance
- Matched Vertex piston helps support longevity, performance, and reduced engine noise
- No machining required for compatible standard-bore applications
- Top-end gasket kit does not include valve stem seals
- Replacement pistons, gaskets, and ring sets are available
- Fits select 2022–2025 Honda CRF250R and CRF250RX models and the 2025 CRF250RWE
- Brand: Cylinder Works
- Manufacturer part number: CW10011K03HC
- Vendor part number: 422-10011KH3
Fitment:
2022 Honda CRF250R
2022 Honda CRF250RX
2023 Honda CRF250R
2023 Honda CRF250RX
2024 Honda CRF250R
2024 Honda CRF250RX
2025 Honda CRF250R
2025 Honda CRF250RWE
2025 Honda CRF250RX