Upgrade the top-end performance of your two-stroke motocross bike with the Athena P400250100001 Cylinder Kit. This 54 mm big bore kit is engineered for Kawasaki KX125 applications and is designed to provide a dependable replacement for worn or damaged original cylinder components. With a 14.8:1 compression ratio, the kit supports strong combustion performance and responsive power when paired with the appropriate supporting components and tuning.
Manufactured by Athena, the kit is built for precise fitment and reliable service in demanding riding conditions. It is suitable for 2003, 2004, 2005, 2006, and 2007 Kawasaki KX125 models. Confirm model-year compatibility and supporting engine specifications before installation. Proper assembly, piston clearance, break-in procedures, fuel requirements, and carburetor or ignition adjustments should follow the motorcycle manufacturer’s recommendations and Athena’s installation guidance.
The Athena P400250100001 cylinder kit is intended for riders, technicians, and powersports professionals seeking a performance-focused top-end solution for a compatible Kawasaki KX125. Its 54 mm bore and 14.8:1 compression specification make it an excellent choice for rebuilding or refreshing the engine while maintaining application-specific compatibility. Use the manufacturer’s instructions and verify all related components before completing installation.
Features:
- Bore Size: 54 mm big bore cylinder kit
- Compression Ratio: 14.8:1 for performance-oriented engine operation
- Brand: Athena
- Manufacturer Part Number: P400250100001
- Vendor Part Number: 68-4800
- Fitment: 2003 Kawasaki KX125
- Fitment: 2004 Kawasaki KX125
- Fitment: 2005 Kawasaki KX125
- Fitment: 2006 Kawasaki KX125
- Fitment: 2007 Kawasaki KX125
- Application: Two-stroke motocross engine top-end replacement or performance rebuild
Fitment:
2003 Kawasaki KX125
2004 Kawasaki KX125
2005 Kawasaki KX125
2006 Kawasaki KX125
2007 Kawasaki KX125