Description:
Concave guide wheel screw
Smooth/easy operation shifting performance
Wide connection design for precise shifting and durability
Wide connection design, dual servo structure, low-key concept.
Features:
Material: aluminium alloy
Model: M390
Speed: 9 speed / 27 speed
Colour: Black
Recommended models: mountain bike/folding model
Package includes:
1*RD-M390 transmission
We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help
Our aim is to provide Top Level Customer Service, so we will try our best to solve any problem.
Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.