Roue Arrière ZIPP 303 S DISC Tubeless Ready (Center Lock) Freehub Body:Shimano HG allowing you to take advantage No Shimano allowing you to take advantage of the 1x12 speed technology with increased gear range to change chainring without reducing climbing ability and never having to put a foot down on the most technical ascents Ensuring fast and precise gear changes across the full cassette range thanks to the combination of X Actuation and Zero Loss Travel technologies it retains an ideal rim height of 45 mm while benefiting from an increased internal width to improve performance and riding comfort Its 76 176 DB hubs with Centre Lock fixing ensure efficient power transfer and maximum durability