The Hope Pro 4 hub is an excellent piece of technology, developed and manufactured with the finest steel and alloy in Barnoldswick, North UK. The hubshell is CNC machined from single-billet 2014T6-Alloy with thick large-diameter flanges for a stiff and strong wheel build and is available in 6 bike-complementing colours. The 4 pawl ratchet system offers excellent engagement at 44 per rotation (8.2deg) for instant power transfer, and the sealed cartridge bearings throughout keep the wheel spinning fast and silent for countless rides to come. Press fit cones and axle configurations are interchangeable to suit any MTB frame. SRAM 11spd Cassettes that use a 10-tooth outer cog such as GX and XX1.