The Namura NX-30000-6K Top End Kit is a complete replacement solution for select Suzuki RM125 two-stroke motorcycles. Designed for a 55.5 mm piston size, this kit includes the piston, piston rings, wrist pin, wrist-pin clips, top-end bearing, and gasket kit needed for a reliable top-end rebuild. It is engineered to fit 1989–2000 Suzuki RM125 models, including model years 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, and 2000. Confirm cylinder and application details before installation to ensure proper fitment.
The piston uses a hypereutectic casting process that increases silicon content for controlled expansion, improved wear resistance, and reliable performance at elevated cylinder temperatures. MOS2, or Teflon/Molybdenum, coated skirts are applied using a rolled-on process designed to create a stronger bond than conventional spray-on coatings. This coating helps reduce friction, improve heat transfer, and minimize the risk of cold seizures during operation.
Machined smooth heads help reflect combustion heat and reduce carbon buildup on the piston crown, supporting consistent performance and protecting the top of the piston. The anodized dome provides increased heat resistance and durability compared with a non-anodized dome. With the included rings, bearing, clips, and gasket components, the Namura NX-30000-6K kit provides the essential parts for servicing the top end of compatible Suzuki RM125 engines.
This Namura top-end kit is identified by manufacturer part number NX-30000-6K and vendor part number 185-30006. It is intended for compatible Suzuki RM125 applications and should be installed according to the motorcycle manufacturer’s service procedures, including proper cylinder inspection, clearances, ring installation, and break-in requirements.
Features:
- Complete top-end kit includes piston, rings, wrist pin, clips, top-end bearing, and gasket kit
- 55.5 mm piston size for compatible Suzuki RM125 applications
- MOS2 Teflon/Molybdenum-coated skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk
- Machined smooth piston heads help reflect combustion heat and reduce carbon buildup
- Anodized piston domes provide increased heat resistance and durability
- Hypereutectic casting process provides controlled expansion, improved wear resistance, and resistance to higher cylinder temperatures
- Fits 1989–2000 Suzuki RM125 models, including 1989–1997 and 2000 model years
- Brand: Namura
- Manufacturer part number: NX-30000-6K
- Vendor part number: 185-30006
Fitment:
1989 Suzuki RM125
1990 Suzuki RM125
1991 Suzuki RM125
1992 Suzuki RM125
1993 Suzuki RM125
1994 Suzuki RM125
1995 Suzuki RM125
1996 Suzuki RM125
1997 Suzuki RM125
1998 Suzuki RM125
1999 Suzuki RM125
2000 Suzuki RM125