Shimano tiagra 4700 chainset has been overhauled using previous dura ace ultegra and 105 tech the tiagra 4700 has been re designed to look more stylish and to fit in with the new wave of shimano styling the more sleeker finish and style looks similar to the shimano 105 chainset but at a more affordable price even at a lower price the shimanohave not changed the performance shimano have trickled down the tech from thehigher levelgroupsets