I have a 2012 RZRXP4 900 with the stage 2 kit. I had to replace the Voltage Regulator on my RZR about a 1 1/2 years ago. Not very long ago. I went back with the OEM 4013904. The Regulator was over charging and the new one fixed it. Price well over $200.00. Now this last weekend I started :popcorn:getting low voltage and not charging. I have not ohm the stator yet but I will. But I think it is the regulator. So far the lowest I can find the OEM Regulator is with Cheap Cycle parts at $202.74 delivered. What about the after market. some of them are as low as $84 but are they as good as the OEM part? Which seem to be not very good either.