STURMEY-ARCHER RX-RK5 5-speed disc-brake hub

135mm spacing, RX-RK5 STURMEY-ARCHER, disc brake rear hub

5-speed internal gear hub with gears ratio of 243%

gear 1 - 64% (gear 2 - 25%)
gear 2 - 80% (gear 3 - 25%)
gear 3 - 100% (direct drive)
gear 4 - 125% (gear 3 + 25%)
gear 5 - 156% (gear 4 + 25%)

rotary gear selector without protrusions outside the frame

designed for heavy duty use

6061 aluminium hub shell

cogs and twist/trigger/thumb shifters not included