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Supple 120 TPI shaped casing allows for minimal ground contact when rolling in a straight line
both crank arms are hollow so they are super stiff
the R4 Race Collar can be worn on the track or trail with minimal distraction and maximum comfort
Q-Factor: 167
BOX ONE V-BRAKES Color:Silver 108mm Supple 120 TPI shaped casingDescription For Box braking weve limited the use of our Oversized Technology to the V area since the levers need to be minimalist and largely act as a remote for the V Brakes. To reduce lateral deflection at the V we chose to enlarge the pivot areas and arms while tightening tolerances at their interfaces. We robbed material from unloaded sections to reinforce these zones of high stress. Not only are you going to be more efficient with brake power
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