The Namura NA-10000-4 piston kit is designed for select Honda TRX450 Foreman all-terrain vehicles requiring a 90.96 mm, +1.00 mm oversized piston. This replacement piston kit supports dependable engine rebuilding and is intended for applications using a cylinder that has been professionally bored and honed to match the piston specifications.
This piston kit fits 1998–2004 Honda TRX450FE Foreman ES [SRA] models and 1998–2000 Honda TRX450FM Foreman S [SRA] models. Verify the vehicle model, year, bore requirement, and engine specifications before installation. The Namura NA-10000-4 is not compatible with OEM piston rings, and its rings will not work with an OEM piston. Use the correctly matched rings supplied or specified for this Namura piston application.
Manufactured by Namura and identified by manufacturer and vendor part number NA-10000-4, this kit is intended for professional installation and proper measurement during engine assembly. Follow the engine manufacturer’s service procedures for clearance, ring installation, lubrication, and break-in to help support reliable performance.
Features:
- Brand: Namura
- Manufacturer part number: NA-10000-4
- Vendor part number: NA-10000-4
- Piston size: 90.96 mm, +1.00 mm oversize
- Application: Replacement piston kit for select Honda TRX450 Foreman models
- Fitment: 1998–2004 Honda TRX450FE Foreman ES [SRA]
- Fitment: 1998–2000 Honda TRX450FM Foreman S [SRA]
- Compatibility: Will not accept OEM rings, and the included rings will not work on an OEM piston
- Installation: Requires a properly bored and honed cylinder matched to the piston specifications
Fitment:
1998 Honda TRX450FE Foreman ES [SRA]
1998 Honda TRX450FM Foreman S [SRA]
1999 Honda TRX450FE Foreman ES [SRA]
1999 Honda TRX450FM Foreman S [SRA]
2000 Honda TRX450FE Foreman ES [SRA]
2000 Honda TRX450FM Foreman S [SRA]
2001 Honda TRX450FE Foreman ES [SRA]
2001 Honda TRX450FM Foreman S [SRA]
2002 Honda TRX450FE Foreman ES [SRA]
2002 Honda TRX450FM Foreman S [SRA]
2003 Honda TRX450FE Foreman ES [SRA]
2003 Honda TRX450FM Foreman S [SRA]
2004 Honda TRX450FE Foreman ES [SRA]
2004 Honda TRX450FM Foreman S [SRA]