Namura NX-10000-CK 53.96 mm Top End Kit for 1992-1999 Honda CR125R

Restore dependable top-end performance with the Namura NX-10000-CK Top End Kit, designed for select 1992-1999 Honda CR125R models. This kit is built around a 53.96 mm piston with an 11:1 compression ratio and includes the essential components needed for a complete top-end rebuild. The kit includes the piston, piston rings, wrist pin, wrist-pin clips, top-end bearing, and gasket kit.

Feature: The piston uses Namura’s MOS2, or Teflon/molybdenum, coated skirts. The rolled-on coating process creates a strong bond while helping reduce friction, improve heat transfer, and minimize the risk of cold seizures. A machined smooth head helps reflect combustion heat and reduce carbon buildup, supporting piston protection and consistent engine operation.

Feature: An anodized piston dome improves heat resistance and durability, while the hypereutectic casting process adds silicon for controlled expansion, increased wear resistance, and improved performance at higher cylinder temperatures. These design features make the Namura NX-10000-CK a practical replacement for maintaining reliable two-stroke engine performance.

This Namura top-end kit fits 1992, 1993, 1994, 1995, 1996, 1997, 1998, and 1999 Honda CR125R motorcycles. The manufacturer part number is NX-10000-CK, and the vendor part number is 185-1000C. Verify the motorcycle year, model, piston size, and required compression ratio before installation.

Features:

• Top-end kit includes piston, rings, wrist pin, clips, top-end bearing, and gasket kit
• 53.96 mm piston with an 11:1 compression ratio
• MOS2 Teflon/molybdenum coated skirt helps reduce friction and cold-seizure risk
• Machined smooth head helps reflect combustion heat and reduce carbon buildup
• Anodized dome improves heat resistance and piston durability
• Hypereutectic casting process provides controlled expansion and increased wear resistance
• Fits 1992-1999 Honda CR125R models
• Brand: Namura
• Manufacturer part number: NX-10000-CK
• Vendor part number: 185-1000C