`- Internal gear 3-speed hub with coaster brake \n- 6061 aluminum hub shell with 13/32" slotted solid axle (175mm overall axle length) \n- Gear ratio range of 177% (33% each step) \n- Includes 3-spline 18 tooth cog and a shifter. Brake lever sold separately \n- Optional: matching front track hub, use UR-5501