HYENA INC. 凱納股份有限公司

 The smallest hub drive with the best torque to weight ratio that provides appropriate assistance at the correct moment only tradeoff a little torque. Its freehub body follows the SHIMANO HG 11 standard and is compatible with up to a 12-speed cassette. The replaceable freehub base design allows you to change the freehub body, like a regular rear hub.