Updated version of Tom DuganÌÎÌ__ÌÎÌ__s signature DGN top load stem Updated version of Tom DuganÌÎÌ__ÌÎÌ__s signature DGN top load stem Special surface contouring and a larger bolt head spec for superior handlebar grip Six bolt clamping configuration CNC machined 6061-T6 aluminum 28mm rise