Bringing Hope quality and durability to Road and Gravel A direct development from the Pro4 hubs with stainless bearings throughout CNC 2014T6 aluminum shell construction with stainless, sealed cartridge bearings Increased engagement with 108 POE while reducing drag through a new pawl/spring design HG 11sp road: Compatible with HG splined Shimano/SRAM 11sp cassettes. Also compatible with Shimano/SRAM 810sp cassettes with spacer Front: 126g, rear: 272g