The Namura NX-20025-BK Top End Kit is designed for 1993 through 2002 Kawasaki KX250 models equipped with a Nikasil-plated cylinder. This complete top-end replacement kit includes a piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit for a convenient engine rebuild solution. The 66.36 mm piston is engineered for reliable fitment and dependable performance in compatible Kawasaki KX250 applications.
The piston features MOS2, or Teflon and molybdenum, coated skirts applied through a rolled-on process that creates a durable bond. This coating helps improve heat transfer, reduce friction, and minimize the risk of cold seizures. Machined smooth heads help reflect combustion heat and reduce carbon buildup, supporting piston protection during demanding riding conditions. Anodized domes provide increased heat resistance and durability compared with standard non-anodized piston designs.
Namura uses a hypereutectic casting process to increase silicon content, helping reduce expansion rates and improve wear resistance while allowing the piston to withstand higher cylinder temperatures. The included gaskets and top-end components help simplify installation, but cylinder condition, clearance, and final assembly specifications should be verified before installation. Confirm the motorcycle year, model, cylinder type, and required piston clearance before ordering.
Fitment: 1993-2002 Kawasaki KX250.
Brand: Namura
Manufacturer Part Number: NX-20025-BK
Vendor Part Number: 185-2025B
Features:
- Complete top-end kit includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit
- Fits 1993-2002 Kawasaki KX250 models with compatible Nikasil-plated cylinders
- 66.36 mm piston size for the specified Kawasaki KX250 application
- MOS2 Teflon and molybdenum coated skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk
- Machined smooth piston head helps reflect combustion heat and reduce carbon buildup
- Anodized piston dome improves heat resistance and durability
- Hypereutectic casting process provides reduced expansion and improved wear resistance
- Brand: Namura
- Manufacturer Part Number: NX-20025-BK
- Vendor Part Number: 185-2025B
Fitment:
1993 Kawasaki KX250
1994 Kawasaki KX250
1995 Kawasaki KX250
1996 Kawasaki KX250
1997 Kawasaki KX250
1998 Kawasaki KX250
1999 Kawasaki KX250
2000 Kawasaki KX250
2001 Kawasaki KX250
2002 Kawasaki KX250
2003 Kawasaki KX250