World-class riders require world class-wheels. The all-new Düroc Pro wheel utilizes SunRingle's proven Düroc SD37 rim mated to their all-new Super Bubba hub via Wheelsmith butted straight-pull spokes. These wheels were designed to handle the gnarliest descents you can find at the greatest velocity you can muster.Who's this item for: Riders riding Enduro, Trail or All-mountain conditions looking for a strong and reliable, rear wheel with solid engagement.Hub Materials: 7075Aluminium.Rotors: 6 Bolt attachment.Convertibility:Features an interchangeable engagement system allowing for change between 4 and 8 degrees of engagement plus interchangeable freehubs.Bearing style/amount: Dual6902 bearings.Rims: SunRingle Duroc SD37 Pro rims.Tubeless: Yes, tubeless-ready.Weight:Approx 1kgRim Dimensions: 37mm outer, 32mm inner.Axle:148x12mm Boost Hub Spacing Materials: Welded alloy, with bead-blasted anodization.Spokes: 28Wheelsmith DB14 spokes Material: 304 stainless steel.J-bend / Straight pull: Straight pull.Nipples: Brass Nipples.What's in the box: Tubeless Sealant Tubeless Valves Alternate Freehub Body (rear wheels)