BOX ONE V-BRAKES Color:Silver 108mm the R4 Race Collar can

the R4 Race Collar can be worn on the track or trail with minimal distraction and maximum comfort

Air Plus tubes feature an increased wall thickness to help prevent punctures and pinch flats

both crank arms are hollow so they are super stiff

and precisely manufactured to gently adjust bent or damaged brake rotors

Muc-Off's formula also contains a unique UV detection system that highlights any punctures you haven't seen during your ride

BOX ONE V-BRAKES Color:Silver 108mm the R4 Race Collar canDescription 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