Same thing happened with mine today. Again hardly used and happened on a steep climb. The outer freehub body (where the cassette slots on) is threaded onto the inner freehub body (with the pawls) and this thread had stripped. What type do I need to get to replace it with? Is the Hope Pro 2 a straight swap?
same with mine only 2 months old & hardly used.....was clipped in going up a super steep rocky pavement @ Wolfrax when it went...thought the chain had come off......got it replaced under warranty for a hope pro 2...nice!!! ...watch out for the Fox rear shock failure that happened next ...the blue adjust lever assembly just popped out....warranty replacement just arrived yesterday...hopefully that's the end of the bike bugs....