Building on Hope’s 30 years of hub manufacturing, the Pro 5 is the combination of all their expertise into a product that meets and exceeds the demands of current and future bike technology. Improved sealing stops dirt ingress and reduces drag, while Labyrinth seals have zero drag for incredible freewheel performance. High tensile steel wire cut pawls for maximum strength, designed to increase longevity, load capacity and a reduction in drag. Hub shell is mach. Built from forged 2014 T6 billet aluminum, the profile is designed for increased stiffness without adding weight. Increased engagement to 108 with a new 6-pawl offset freehub design Fully serviceable and rebuildable with simple tools End spacers can be easily changed to fit different frame and axle standards - Sold Separately Item Specifics Bearing Type Cartridge Bearings Cassette Body Type Shimano Micro Spline Center to Flange, Left 35 Center to Flange, Right 22.6 Color Black Color Defined Black Flange Diameter, Left 57 Flange Diameter, Right 59 Hub Drilling 28 Hub/Brake Compatibility 6-Bolt Disc Rear Axle 12mm Thru x 148mm Spoke Interface J-Bend Tooth Count 108 Weight 318