CYLINDER FULL KIT 54MM KAWASAKI KX125 03-07, ATHENA P400250100001 STD BORE, (piston included)
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
ATHENA Standard Bore Cylinder Kit for Kawasaki KX125 2003-2007. This kit features a 54mm bore diameter and 125cc displacement. The cylinder is engineered in Italy with a motor-nicksil coating for smoothness and wear resistance. It includes a lightweight aluminum cylinder, cylinder head with interchangeable central dome, complete piston with pin and rings, and all necessary gaskets. The components are designed to withstand high temperatures, pressures, and stresses. This cylinder kit can be installed without engine crankcase modifications. Technical features include a 14.8:1 compression ratio and a net weight of 1.60 Kg. Part number P400250100001.
- SKU
- 56-K122.54.K.A
- Brand
- Athena
- Availability
- Out of Stock
Fitments (5)
| Make | Model | Year |
|---|---|---|
| KAWASAKI | KX 125 | 2003 |
| KAWASAKI | KX 125 | 2004 |
| KAWASAKI | KX 125 | 2005 |
| KAWASAKI | KX 125 | 2006 |
| KAWASAKI | KX 125 | 2007 |
- General Product Group
- Engine
- General Product Type
- Cylinder Kits
- Variant Id
- 252730
FULL DESCRIPTION
Athena Standard Bore Cylinder Kit - 54mm
Upgrade your engine's performance with this Athena Standard Bore Cylinder Kit. Engineered and manufactured in Italy, this kit is designed to deliver optimal performance, durability, and reliability.
The cylinder features a high-quality aluminum construction with Athena's proprietary Motor-Nicksil coating. This nickel-silicon coating provides exceptional smoothness and wear resistance, ensuring longevity. The included piston is specifically designed to reduce friction, further enhancing performance and efficiency.
This kit offers the same performance as original spare parts, ensuring a perfect fit and seamless integration. All components have undergone rigorous testing by Athena technicians on benches and roads to withstand extreme temperatures, pressures, and stresses.
Key Features:
- Standard Bore Diameter: 54mm
- Displacement: 125cc
- Motor-Nicksil Coating for enhanced durability and smoothness
- Lightweight aluminum cylinder
- Friction-reducing piston design
- Includes cylinder head with interchangeable central dome
- Complete piston with pin and rings
- All necessary gaskets included
- No engine crankcase modifications required for installation
Technical Specifications:
- Bore Diameter: 54.00 mm
- Compression Ratio: 14.8:1
- Displacement: 125 cc
- Net Weight: 1.60 Kg
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


