Sturmey Archer RX-RD3 3sp Drum Brake Rear Hub.
- Internal gear 3-speed hub with either a 70mm or a 90mm drum brake
- RX hubs feature an inboard rotary mechanism (and solid axle), meaning no protrusions outside of the chainstay like the indicator chain type
- A356 aluminum hub shell with 13/32" slotted solid axle (163/177mm overall axle length)
- Gear ratio range of 177% (33% each step)
- Includes 3-spline 18 tooth cog and a SLS30-T thumb shifter. Brake lever sold separately