I rounded the Ti stem tightening bolt (stop me if it is to technical) so kaiser drilled it out for me and gave me a couple of replacement bolts but the lever tightens but can still be moved round with force, sure I could pic up the right bolt from avid or investigate further but cant really be biscuit arsed as they don't really look that good next to the xt thumbies. They did not really work with the xtr v's so I assume they are the canti model.