The Namura NA-50025 Standard Piston Kit is designed for select Polaris 330 ATV applications. This replacement piston kit features a standard bore size of approximately 3.09 inches and is intended to support dependable engine rebuilding and replacement needs. It is manufactured by Namura for applications requiring a compatible standard-size piston assembly.
This kit fits 2008–2013 Polaris Trail Blazer 330 models and 2003–2006 Polaris Trail Boss 330 models. Verify the engine configuration and current piston specifications before ordering to help ensure proper fitment. The Namura NA-50025 is not compatible with OEM piston rings, and its rings will not work on an OEM piston; use the matching components supplied or specified for this kit.
Built for powersports engine service, this Namura piston kit is suitable for replacing worn or damaged piston components during an overhaul. The product is identified by manufacturer part number NA-50025 and vendor part number 187-50025. Always follow the vehicle manufacturer’s service procedures and confirm clearance, bore condition, and installation requirements before assembly.
Features:
- Brand: Namura
- Manufacturer part number: NA-50025
- Vendor part number: 187-50025
- Size: Standard bore, approximately 3.09 inches
- Model application: Polaris 330 ATV engine models
- Fitment: 2008–2013 Polaris Trail Blazer 330
- Fitment: 2003–2006 Polaris Trail Boss 330
- Compatibility: Will not accept OEM rings, and the included rings will not work on an OEM piston
- Application: Replacement piston kit for engine rebuilding and service
Fitment:
2003 Polaris Magnum 330 2X4
2003 Polaris Magnum 330 4X4
2003 Polaris Trail Boss 330
2004 Polaris Atp 330
2004 Polaris Magnum 330 2X4
2004 Polaris Magnum 330 4X4
2004 Polaris Trail Boss 330
2005 Polaris Atp 330
2005 Polaris Magnum 330 2X4
2005 Polaris Magnum 330 4X4
2005 Polaris Trail Boss 330
2006 Polaris Magnum 330 4X4
2006 Polaris Trail Boss 330
2007 Polaris Trail Boss 330
2008 Polaris Trail Blazer 330
2008 Polaris Trail Boss 330
2009 Polaris Trail Blazer 330
2009 Polaris Trail Boss 330
2010 Polaris Trail Blazer 330
2010 Polaris Trail Boss 330
2011 Polaris Trail Blazer 330
2011 Polaris Trail Boss 330
2012 Polaris Trail Blazer 330
2012 Polaris Trail Boss 330
2013 Polaris Trail Blazer 330
2013 Polaris Trail Boss 330