UCB BB90S Nano Tech Ceramic Bearings For Shimano Arundel staying hydrated while on the

staying hydrated while on the bike is key

The exact modulation decreases drag and allows you to have a high power stop without hurting your hands

BPA/BPS/BPF Free - true

Use Gorilla Cage for rear hydration carriers

UCB BB90S Nano Tech Ceramic Bearings For Shimano Arundel staying hydrated while on theUCB Auxilium Nano BB 90 unit : SELF LUBRICATING, SELF HEALING bearings, the fastest most reliable bearings we have ever produced. 54grams complete, the fastest most reliable bearings we have ever produced. Fully interchangeable with all 24MM axle compatible cranksets Auxilium is here Bearing Races choice Auxilium Nano surface treated s440c cryogenically hardened stainless races Bearing Sealing Silicon based rubber Non contact Rolling Elements Silicon