The Namura NA-50012-6 piston kit is designed for select Polaris 850 ATV and utility applications requiring an 88.43 mm oversize piston. This replacement piston kit is intended for properly prepared engine rebuilds and provides a dependable fit for compatible 2015–2017 Polaris Sportsman and Polaris Scrambler models.
Important compatibility note: This Namura piston kit will not accept OEM piston rings, and its rings will not work with an OEM piston. Use the rings supplied or specified for the Namura NA-50012-6 piston kit, and verify cylinder preparation, piston clearance, and application details before installation.
Fitment includes the 2015–2017 Polaris Sportsman 850, Sportsman 850 SP, Sportsman Touring 850 SP, and the 2015 Polaris Scrambler 850. The manufacturer part number is NA-50012-6, and the vendor part number is 187-500126. Confirm the engine model and required oversize specification before ordering to ensure proper installation.
Features:
- Size: 88.43 mm oversize piston
- Model: NA-50012-6 piston kit
- Brand: Namura
- Manufacturer part number: NA-50012-6
- Vendor part number: 187-500126
- 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: Does not accept OEM rings, and the included rings are not compatible 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