X-RK4 Rotary Disk Brake

Features

4 Speed Disc Brake Rear Hub

• 4-Speed internal gear hub with gear ratio of 210%
• Gear steps of 28%, 28% and 28%
• Rotary gear selector without protrusions outside the frame
• Direct drive in 1st gear allows use of smaller chainwheels
• 6061 Aluminium hub shell
• Available with 28, 32 or 36 spoke holes
• Compatible with 13 to 24 teeth sprocket
• Anodised alloy finish
• Weight – 1270g