The NAMURA NX-20000K Top End Kit is designed for Kawasaki KX125 models equipped with a standard-bore Nikasil cylinder. This complete top-end solution includes a piston, piston rings, wrist pin, wrist-pin clips, top-end bearing, and gasket kit for a comprehensive engine refresh. The kit fits 1998, 1999, and 2000 Kawasaki KX125 motorcycles and is built to support dependable performance, proper fitment, and long-term durability.
The piston uses a hypereutectic casting process that increases silicon content to help control thermal expansion and improve wear resistance. This construction allows the piston to withstand elevated cylinder temperatures while maintaining reliable operation. MOS2, or Teflon and molybdenum, coated skirts are applied using a rolled-on process that creates a stronger bond than conventional spray-on coatings. The coating helps improve heat transfer, reduce friction, and minimize the risk of cold seizure during operation.
Machined smooth heads help reflect combustion heat and reduce carbon buildup, helping protect the piston crown. The anodized dome provides increased heat resistance and durability compared with a non-anodized design. The result is a replacement top-end kit engineered for riders and technicians seeking a practical solution for renewing the upper end of a compatible Kawasaki two-stroke engine.
Verify the motorcycle year, model, cylinder type, and standard-bore application before installation. The manufacturer part number is NX-20000K, and the vendor part number is 185-2000. Professional installation and proper break-in procedures are recommended for best results.
Features:
- Complete top-end kit includes piston, rings, wrist pin, clips, top-end bearing, and gasket kit
- Fits 1998, 1999, and 2000 Kawasaki KX125 models with a standard-bore Nikasil cylinder
- MOS2 Teflon and molybdenum coated piston skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk
- Hypereutectic casting process provides controlled expansion, increased wear resistance, and improved high-temperature durability
- Machined smooth piston head helps reflect combustion heat and reduce carbon buildup
- Anodized piston dome improves heat resistance and durability
- Brand: NAMURA
- Manufacturer part number: NX-20000K
- Vendor part number: 185-2000
Fitment:
1998 Kawasaki KX125
1999 Kawasaki KX125
2000 Kawasaki KX125