DJD S.DRIVE Dirt Jump Disc, Single Speed, 11T Bush Drive, SupaDrive 120T engagement, Bolt-in - DJD Supa Drive Rear HubDeveloped with the help of Sam Pilgrim (and chosen by Matt Jones, Blake Samson and Sam Reynolds) we have taken the best-selling DJD Bush Drive hub and improved it further by adding the proven 120 teeth triple wedge pawl mechanism of the Supa Drive hub. This provides positive and secure drive, a freewheel sound like no other and micro-notch engagement gaps for that perfect pedal pick-up.BD hubs have been utilised successfully in the hardcore BMX market for quite a while, and the advantages of their lighter weight and improved durability over cartridge bearings are pretty well proven, especially when using compact cog sizes. The stresses caused in a Single Speed hub can be huge and, a bush spreads the loads involved over a much larger surface area than ball bearings can achieve, and therefore helps to avoid premature bearing failure.In addition to the BD features, we have fitted a lightweight alloy axle with tough, replaceable, M10 bolt-in Cro-Mo fixings and alloy caps. We also know that bolt-in fittings can be tricky if the axle starts to spin when turning the bolt, (as you have nothing to hold) - so we have also added a 6mm Hex broach deep inside the axle - just in case the axle starts to spin when you don't want it to!14mm adaptors included: the large surface faces of the cones allow us to also use 10-14mm adaptor washers - making this hub suitable for 10mm or 14mm dropouts.,Forged & CNC finished body with slotted flanges.,Bush Driver with screw-on 11T sprocket.,Hollow Alloy axle with 6mm central hex.,Cr-Mo M10 Bolt-in fixings.,14mm adaptors included..FeaturesSuper strong lightweight alloy axle.,2 sealed main body bearings and 1 hardened plastic driver bush.,3 wedge pawls ensure positive drive.,120 points of engagement.,Lightweight forged CNC finished alloy hub shell.,11T x 1/8" drivers sprocket fitted standard. ,9,10,11,13,14,16t sprockets also available.SpecificationsDrillings : 32 or 36H,Axle : Hollow Alloy axle with 6mm central hex,Disc Mount : 6 Bolt,Centre to Flange Center Left: 34mm, Center Right: 35mm,OLD 135mm,Dimensions : Flange Diameter: 58mm,Colour : Red or Black,Weight : 326g.