ATHENA - P400250100001 - Cylinder Kit - 54.00 mm - KX125
The ATHENA P400250100001 Cylinder Kit for 2003-2007 Kawasaki KX125 models features a nickel carbide-coated aluminum cylinder with enlarged water jackets and hard anodized power valves, paired with an aluminum head featuring a removable bronze dome for higher compression ratio and anti-detonation — the kit includes a Cast-Lite flat-top piston and complete top-end gasket set.
Features
- Aluminum cylinder is nickel carbide coated designed with larger water jackets
- Specially designed, high performance, hard anodized power valves (cannot use OEM)
- There is an aluminum cylinder head with a removable bronze dome allowing for a higher compression ratio and anti-detonation features (except where noted)
- Kit also includes a Cast-Lite flat top piston kit, and an Athena top-end gasket set that includes required seals and hardware
- Bolt on; no matching required except where noted
Specs
- Riding Style: Off-Road
- Displacement: 125 cc
- Product Name: Cylinder Kit
- Engine Type: 2-Stroke
- Material: Aluminum
- Style: Stock Bore
- Bore Size: 54.00 mm
- Cylinder Bore Coating: Nickel-Carbide
- Units: Kit
Frequently Asked Questions - ATHENA - P400250100001 - Cylinder Kit - 54.00 mm - KX125 - '03-'07 Kawasaki
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
