Just like the matching rear hubs, the M985 front disc hubs feature Angular Contact bearings mated to an oversize 14mm alloy axle to support the load of vertical and lateral forces. The combination of the oversize axle and large diameter hub body makes the hub nice and stiff to help deflect flex normally found in a front hub. The Labyrinth sealing system is borrowed from Dura-Ace hubs and is very effective in keeping the bearings fresh and hub internals clean. Probably the best design in sealing a hub from the elements ever produced.
The hub finish is now polished black instead of the previous XTR version of anodized with polished accents, to provide and less industrial and more refined look and appeal.