BB7 There is the link to the BB7, if I were you, I would get an Avid sd7 lever to go with it. Also try and get some decent brake cable to go with it, this will make the brake feel better. 160mm will be plenty for a mod aswell. Here is the link for a chainstay protector. chainstay protector But I found wrapping an old cut up inner tube around the chainstays, held on with cable ties will work fine.