The Namura NA-50081-B piston kit is designed for select Polaris Sportsman 800 EFI applications. This replacement piston kit fits the 2008 and 2009 Polaris Sportsman 800 EFI and is intended for use with a compatible aftermarket cylinder and ring set. The piston specification is 79.96 mm with a +0.01 oversize designation, making it suitable for the corresponding engine rebuild or replacement application.
Fitment: Fits 2008 Polaris Sportsman 800 EFI and 2009 Polaris Sportsman 800 EFI. Verify the cylinder bore, piston clearance, and engine specifications before installation to ensure proper compatibility. The kit is identified by Namura manufacturer part number NA-50081-B and vendor part number 187-50081B.
Important Compatibility Note: This piston kit will not accept OEM piston rings, and the included or specified rings will not work with an OEM piston. Use the correct compatible Namura piston ring set and confirm all components as a matched assembly before installation. Proper measurement and installation procedures are essential for reliable engine performance and service life.
Features:
- Brand: Namura
- Manufacturer Part Number: NA-50081-B
- Vendor Part Number: 187-50081B
- Piston Size: 79.96 mm / +0.01 oversize
- Fitment: 2008-2009 Polaris Sportsman 800 EFI
- Compatibility: Will not accept OEM piston rings, and the compatible rings will not work on an OEM piston
- Application: Replacement piston kit for compatible Polaris Sportsman 800 EFI engine rebuilds
Fitment:
2008 Polaris Sportsman 800 EFI
2009 Polaris Sportsman 800 EFI