What kind of axels do I have?

Attachment 142007Attachment 142007Bought a used 2013 rzr 900 Xp LE,,,guy built it to race. I have to replace a cv boot…bought a stock one and it’s way too small. There are no markings on the axel at all, there is a part number on the inner boot…PH98286…any one help here? Picture of axel and boots….small one is stock….cheers

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