Specialized Free Hub housing Singletracks Mountain Bike News, Reviews, MTB Trails and Community › Protected: Forums › Mountain Bike Forum › Specialized Free Hub housing Tweet Add to Flipboard Magazine. Viewing 1 reply thread Author Posts October 20, 2013 at 16:30 #122365 NC-Biker I believe that my free hub housing is going bad,but I can’t seem to find out which model of free hub housing I should get. I’ll give a link to my bike anda document I have found and see if you guys can make heads or tails out of it. http://www.specialized.com/us/en/bikes/ … ercomp29er http://techdocs.shimano.com/media/techd … 745532.pdf October 25, 2013 at 20:11 #122366 d_cushman You’re going to have to explain what "free hub housing" means, as that’s not a normal term. And what is going bad about it? Author Posts Viewing 1 reply thread You must be logged in to reply to this topic.