Shimano 105 rear hub 5800 the shimano 105 rear hub 5800 is an incredibly durable and smooth 9 10 and 11 speed compatible rear hub that comes complete with a qr skewer it features labyrinth and low friction contact sealing which effectively shuts out water and muck without affecting rotational smoothness providing outstanding performance in all weather conditions features cubic boron nitride treated cone races provide a mirror smooth bearing surface for low friction corrosion free performanc