Will not accept OEM rings and rings will not work on OEM piston

Designed To Fit:
2009 Polaris Sportsman XP 550
2009 Polaris Sportsman XP 550 EPS
2010 Polaris Sportsman 550
2010 Polaris Sportsman 550 EPS
2010 Polaris Sportsman Touring 550 EPS
2010 Polaris Sportsman X2 550
2010 Polaris Sportsman XP 550
2011 Polaris Sportsman 550
2011 Polaris Sportsman 550 EPS
2011 Polaris Sportsman Touring 550 EPS
2011 Polaris Sportsman X2 550
2012 Polaris Sportsman 550
2012 Polaris Sportsman 550 EPS
2012 Polaris Sportsman Touring 550 EPS
2012 Polaris Sportsman X2 550
2013 Polaris Sportsman 550
2013 Polaris Sportsman 550 EPS
2013 Polaris Sportsman Touring 550 EPS
2013 Polaris Sportsman X2 550
2013 Polaris Sportsman XP 550
2014 Polaris Sportsman 550 EPS
2014 Polaris Sportsman Touring 550 EPS
2014 Polaris Sportsman X2 550 EPS
2014 Polaris Sportsman XP 550

Manufacturer Part Number: NA-50011