Upgrade the top end of your compatible motocross engine with the Cylinder Works 30001-K01 Standard Bore High-Compression Cylinder Kit. Designed for a 77.00 mm standard-bore application with a 12.6:1 compression ratio, this complete kit includes the cylinder, matched piston kit, and required gaskets for a reliable engine rebuild and performance-focused replacement.
The Cylinder Works cylinder is styled to look like the original equipment component while using a nickel-silicon-carbide plated bore for extended service life, consistent performance, and improved durability. The matched Vertex piston is selected to support longevity, reduce engine noise, and maintain dependable operation. No machine work is needed for installation when used with the specified application and properly prepared components.
Fitment: This kit fits the 2004 and 2005 Kawasaki KX250F, along with the 2004, 2005, and 2006 Suzuki RM-Z250. It is intended for standard-bore replacement and includes the components needed for a complete top-end service. The top-end gasket kit does not include valve stem seals, so those seals should be inspected and replaced separately as needed. Replacement pistons, gaskets, and ring sets are available for future maintenance.
Verify model year, engine specifications, and installation requirements before ordering. Professional installation and adherence to the manufacturer’s service procedures are recommended to help ensure proper fit, compression, break-in, and long-term engine performance. Manufacturer part number 30001-K01 and vendor part number 422-30001K identify this Cylinder Works kit.
Features:
- Standard bore high-compression cylinder kit for a 77.00 mm application with a 12.6:1 compression ratio
- Includes cylinder, matched Vertex piston kit, and gaskets
- Nickel-silicon-carbide plated cylinder bore for extended life and durable performance
- Matched piston helps support longevity, performance, and reduced engine noise
- Cylinder design closely matches the original equipment appearance
- No machining required when installed according to the specified application requirements
- Fits 2004-2005 Kawasaki KX250F models
- Fits 2004-2006 Suzuki RM-Z250 models
- Top-end gasket kit does not include valve stem seals
- Replacement pistons, gaskets, and ring sets are available
- Brand: Cylinder Works
- Manufacturer part number: 30001-K01
- Vendor part number: 422-30001K
Fitment:
2004 Kawasaki KX250F
2004 Suzuki RM-Z250
2005 Kawasaki KX250F
2005 Suzuki RM-Z250
2006 Suzuki RM-Z250