In the wake of the success of the 11 Speed Dura Ace 9000 group, Shimano has recently revealed that the 11 Speed sensation was moving down the line to the more affordable Ultegra 6800 group. Upgrades on the Ultegra 6800 Hubs go beyond the addition of an extra speed! In order to bring the Ultegra tubeless wheels up to date with the new 11 speed suit, 6800 hubs have been updated with a new freehub that features a new cone digital adjustment system designed to diffuse quick release tension, reducing the load on the bearings to enable smoother spinning and increased durability. In place of the double lock system normally found on most cup and cone hubs is a ratcheting ring hidden under an end cap. To adjust it you simply remove the end cap with a 5mm allen, and rotate the ring to eliminate any play in the bearings.
Digital cone adjustment system for precision tuning
Stiff oversize aluminum axle is less affected by quick-release axial force
Cubic boron nitride treated cone races & angular contact bearings ensure long life, precision adjustment and maximum efficiency
Labyrinth seal design for increased all-weather durability
Out of the box, this hub easily rivals my Easton R4SL hubs spinning on ceramic sealed bearings. They ROLL! The pawl sound is modest by some standards, but clear and welcome by others. The skewers are way too heavy, but I love the rest of it: a superlative roll with easy ball driven serviceability. So why the 4 stars? While the finish is awesome, some wheels need black hubs, some need silver, and some need the in-between compromise. Shimano has just given us the latter.
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