INTRODUCE
INTERNAL 5-SPEED GEABOX： : Recommended for commuter bikes, snow bikes, tricycles, folding bikes, and youth bikes.
Product Detail
Number of gears：3
Speed ratio range：216%
Minimum speed ratio：0.68
Maximum speed ratio：1.47
CL：49-52mm
Q-factor：165-175mm
Maximum input torque: 250nm
control mode：wire
