The HD_Memory_Foam protection is a closed-cell foam

Races are hardened to R-62 and polished to a mirror finish with ABEC 3 certification for tolerance and noise

Our bearings are always engineered with deepest groove races possible to accommodate the largest balls and feature dual-lip seals that ride in a micro-groove creating full labyrinth to provide long life and superior protection against the elements

Perfect for when conditions take a turn for the worse

Hope Pro 5 Rear Centrelock 12x148mm Disc Hub - Rear - 12x148mm Boost - XD Driver - Centrelock - 28 Hole - J-Bend - Orange Needs Images The HD_Memory_Foam protection is aBuilding on Hopes 30+ years of manufacturing hubs, the Pro 5 is the combination of all their experience into a product to meet and exceed the demands of current and future bike technology. Features: Improved sealing to stop dirt ingress and to reduce drag New Labyrinth seal has zero drag for incredible freewheeling performance New Pawls Springs design to increase longevity, load capacity & a reduction of drag Increased engagement from 44 to 108 with a