Fat Bike Rear HubsDeveloped using the proven technology of our well established mountain bike products our Fat bike hubs deliver excellent performance.Light and smooth with reliable power transfer. The ultra-dependable drive system of this hub uses 6 independently sprung, double tipped, reversed pawls; giving 12 point simultaneous engagement on a 30 click cro-mo drive ring.Available with Shimano HG (Alloy or Cr-Mo) or Sram XD freehubs.170mm hub specifications:4 sealed cartridge bearings.,Flange spacing: 78mm,Flange diameter: 58mm,C-L 40mm,C-R 35mm,Chainline: 61.7mm.Supplied to fit 177mm x 12mm thru-axle with 170mm x M10 bolt-in axle set included. Fits regular QR or horizontal SS dropouts.Weights: 12mm thru-axle 400g, 10mm female type 478g (inc bolts).190mm hub specifications:5 cartridge bearings.,Flange spacing: 110mm,Flange diameter: 58mm,C-L 62mm,C-R 45mm,Chainline: 71.7mm.Supplied to fit 190mm x 12mm thru-axle with end caps for 197mm x 12mm thru-axle system included.Weight: 432grams (12mm axle type)SpecificationsDrillings 32H,Bearings 6902 cartridge bearings,Model Ref 6DSWR7 (170mm) 6DSWR9 (190mm),Colour Black,Weight 400 - 476g.