Original Novatec D881SB D882SB MTB Downhill Mountain Bike Hubs 4in1 15 12 142 Thru 32 Holes Disc Brake Bicycle Hub for AM FR DH novatec d881 d882 mtb bike hubs fr am mountain bike disc hubs 15 mm rear hub front 12 x142 barrel shaft hub 32 holes page 2