Sturmey archer RXLRD3 3sp Hub & Drum Brake Kit internal geared hub rear 36H 135

3-Speed 90mm drum brake internal gear hub with an overall gear ratio of 177% and 33% gear steps. Includes trim kit with 18T sprocket and TSC34 twist shifter. Rotary gear selector without protrusions outside the frame. Compatible with 17 to 19 teeth sprocket. A356 Aluminium hub shell with a natural alloy finish