Sturmey archer RXRD5 5sp Hub & Drum Brake Kit internal geared hub rear 36H 135

5-Speed internal gear hub with gear ratio of 243% with 25% gear steps. Rotary gear selector without protrusions outside the frame. Compatible with 16 to 22 teeth sprocket. Trim kit and twist shifter included. A356 Aluminium hub shell . Designed for heavy duty use