Shimano 105 Front Road Bicycle Hub – HB-5800 Review Posted: August 08, 2018 Under: Bike Hubs By ChillyBoulder no Comments vFront Hub High durability, Smooth rolling for best performance High quality sealing Cup & Cone Bearing. Internal Grease Sleeve Wt: 155g Hubs feature internal o-rings and a grease sleeve that helps maintain grease levels and increases service life.