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Silent and uninterrupted rear shifting on rough terrain
Tiagra ST-4720
which is compatible with numerous other
The life of the battery is up to 2
TRC Velocity Integrated Carbon Barstem Size:400*90 Silent and uninterrupted rear shiftingThe TRC Velocity Barstem provides huge aerodynamic advantages compared to a traditional round bar and separate stem setup, in addition to being exceptionally comfortable. We chose Toray T700 carbon fiber specifically because it is exceptionally resistant to torsional forces while still offering a level of vertical compliance, the TRC Velocity Barstem can withstand the burliest sprinting grips without allowing road vibrations to fatigue the hands and