I was looking at purchasing Pivot works rear bearing kit for my 2004 Foreman S. I just want to know why the kit only has two bearings and factory bearings you need three(2 on the right and one on the left)? Are pivot work any good? Any other sites have good bearings? I have heard bad things about HL's sealed wheel bearings. i thought of going with oem, but wanted to come out a little cheaper, but are aftermarket bearings better or equal to oem bearings? Thanks.