The Namura NA-50012-2 piston kit is designed for select Polaris 850 powersports applications requiring an oversize replacement piston. With an 87.43 mm piston size, this kit is intended for a 0.50 mm oversize bore configuration and provides a dependable replacement solution for compatible engine rebuilds. The kit is manufactured by Namura and is identified by manufacturer part number NA-50012-2 and vendor part number NA-50012-2.
Fitment includes the 2015–2017 Polaris Sportsman 850, 2015–2017 Polaris Sportsman 850 SP, 2015–2017 Polaris Sportsman Touring 850 SP, and the 2015 Polaris Scrambler 850. Verify the vehicle model, year, bore specification, and piston requirements before installation to ensure proper compatibility.
This Namura piston kit will not accept OEM piston rings, and the included or compatible rings are not intended for use with an OEM piston. Use the correct Namura components as specified for this application. Professional installation and careful measurement of the cylinder bore, piston clearance, and related engine components are recommended during an overhaul.
Features:
- Brand: Namura
- Product Type: Oversize piston kit
- Piston Size: 87.43 mm
- Oversize Specification: 0.50 mm
- Manufacturer Part Number: NA-50012-2
- Vendor Part Number: NA-50012-2
- Fitment: 2015–2017 Polaris Sportsman 850
- Fitment: 2015–2017 Polaris Sportsman 850 SP
- Fitment: 2015–2017 Polaris Sportsman Touring 850 SP
- Fitment: 2015 Polaris Scrambler 850
- Compatibility Note: Will not accept OEM rings, and the rings will not work with an OEM piston
Fitment:
2009 Polaris Sportsman XP 850
2009 Polaris Sportsman XP 850 EPS
2010 Polaris Sportsman Touring 850 EPS
2010 Polaris Sportsman XP 850
2010 Polaris Sportsman XP 850 EPS
2011 Polaris Sportsman Touring 850 EPS
2011 Polaris Sportsman X2 850
2011 Polaris Sportsman XP 850
2011 Polaris Sportsman XP 850 EPS
2012 Polaris Sportsman Touring 850 EPS
2012 Polaris Sportsman XP 850
2012 Polaris Sportsman XP 850 EPS
2013 Polaris Scrambler XP 850
2013 Polaris Scrambler XP 850 EPS
2013 Polaris Sportsman Touring 850 EPS
2013 Polaris Sportsman XP 850
2013 Polaris Sportsman XP 850 EPS
2014 Polaris Scrambler XP 850
2014 Polaris Scrambler XP 850 EPS
2014 Polaris Sportsman 850 HO Wv
2014 Polaris Sportsman Touring 850 EPS
2014 Polaris Sportsman XP 850 EPS
2015 Polaris Scrambler 850
2015 Polaris Sportsman 850
2015 Polaris Sportsman 850 SP
2015 Polaris Sportsman Touring 850 SP
2016 Polaris Scrambler 850
2016 Polaris Sportsman 850
2016 Polaris Sportsman 850 SP
2016 Polaris Sportsman Touring 850 SP
2017 Polaris Scrambler 850
2017 Polaris Sportsman 850
2017 Polaris Sportsman 850 SP
2017 Polaris Sportsman Touring 850 SP
2018 Polaris Scrambler 850
2018 Polaris Sportsman 850
2018 Polaris Sportsman 850 SP
2018 Polaris Sportsman Touring 850 SP
2019 Polaris Scrambler 850
2019 Polaris Sportsman 850
2019 Polaris Sportsman 850 SP
2019 Polaris Sportsman Touring 850 SP
2020 Polaris Sportsman 850
2020 Polaris Sportsman Touring 850 EPS