Hope Pro 4 Rear 6 Bolt Disc Hub - 12x157mm - 32 Hole - XD Driver - Silver Back in Stock Clamp diameter: The OneUp Stem

Clamp diameter: The OneUp Stem is only available for 35mm clamp bars

forged steel 36t ratchet ring

Tapered custom shape to fit even those difficult helmets

and one thin so you can fine-tune the fit to suit your preference

and more tunable bottom-out progression

Hope Pro 4 Rear 6 Bolt Disc Hub - 12x157mm - 32 Hole - XD Driver - Silver Back in Stock Clamp diameter: The OneUp StemThe Pro 4 is an incredibly versatile and easily serviceable hub that builds upon Hope's reputation for bulletproof quality and attention to detail. The hubs are machined from a single billet of 2014 T6 aluminium and run on stainless steel sealed cartridge bearings for smooth running and outstanding reliability. The 4 pawl ratchet system has 44 teeth with solid and reliable 8. 2 deg engagement with that unmistakable Hope sound. The Pro 4 spoke flange