FLUIDITY Shimano UltegraSPEED + COMFORT TIMEs all time best seller returns Completely redeveloped to meet the demands of the modern performance endurance cyclist. Fluidity is the definitive expression of everything this category should be: fast, precise, responsive, and comfortable to perform over any distance. When we say comfort, we mean fit. Fluiditys endurance geometry places the rider in a more upright position compared to a pure race bike shoulders back, breathing