Shimano ultegra 6800 groupset the ultegra 6800 groupset is one step down from shimanos flagship dura ace groupset and as a result it features many of the same performance enhancing design features but at a fraction of the cost the brakes are dual pivot which results in a much stronger and more consistant braking performance allowing you to push the boundaries on the descents a range of 11 sprockets on the cassette allow for smooth snappy gear changes though if you are a a climber a 32t op