The Namura NX-30050-2 piston kit is designed for select Kawasaki KDX 50 and Suzuki JR50 applications. This 41.46 mm piston kit, identified as an oversize +0.50 mm replacement, supports engine rebuilding when the cylinder has been properly bored and prepared for the corresponding piston size. It is intended to help restore dependable engine performance and provide a suitable replacement for worn or damaged internal components.
Fitment: Fits 2003–2006 Kawasaki KDX 50 and 1978–1983 Suzuki JR50 models. Verify the model year, cylinder bore specifications, and piston clearance before installation. The Namura manufacturer part number is NX-30050-2, and the vendor part number is 187-300502.
Important compatibility note: This piston kit will not accept OEM piston rings, and the included or replacement rings are not compatible with the OEM piston. Use the correct Namura piston and ring combination for this application, and follow the manufacturer’s installation, clearance, and break-in recommendations. Professional inspection and measurement of the cylinder, piston, and related components are recommended before assembly.
Features:
- Size: 41.46 mm piston diameter with a +0.50 mm oversize specification
- Model: Piston kit for select Kawasaki KDX 50 and Suzuki JR50 applications
- Brand: Namura
- Manufacturer Part Number: NX-30050-2
- Vendor Part Number: 187-300502
- Fitment: 2003–2006 Kawasaki KDX 50 and 1978–1983 Suzuki JR50
- Compatibility: Will not accept OEM rings, and the rings are not compatible with the OEM piston
- Installation: Requires verification of cylinder bore condition, piston clearance, and correct ring compatibility before installation
Fitment:
1978 Suzuki Jr50
1979 Suzuki Jr50
1980 Suzuki Jr50
1981 Suzuki Jr50
1982 Suzuki Jr50
1983 Suzuki Jr50
1984 Suzuki Jr50
1985 Suzuki Jr50
1986 Suzuki Jr50
1987 Suzuki Jr50
1988 Suzuki Jr50
1989 Suzuki Jr50
1990 Suzuki Jr50
1991 Suzuki Jr50
1992 Suzuki Jr50
1993 Suzuki Jr50
1994 Suzuki Jr50
1995 Suzuki Jr50
1996 Suzuki Jr50
1997 Suzuki Jr50
1998 Suzuki Jr50
1999 Suzuki Jr50
2000 Suzuki Jr50
2001 Suzuki Jr50
2002 Suzuki Jr50
2003 Kawasaki KDX 50
2003 Suzuki Jr50
2004 Kawasaki KDX 50
2004 Suzuki Jr50
2005 Kawasaki KDX 50
2005 Suzuki Jr50
2006 Kawasaki KDX 50
2006 Suzuki Jr50