my son rode my 2000 sp 500 with a front lift kit and 27" mudzilla's for the first time, we just had em put on i warned him that he had to treat it gentle or these tires could rip up stuff! well what he ripped is in the front in the top black boot you can feel that it is broken is this a cv joint? it is on the uppermost shaft coming to the top of the front wheel in a black boot. my big question is what is it and is it hard to change



thanks butch
2000 sp 500