External Junction B

The junction box SM-JC40 is used externally, when internal cable routing or an internal junction box (SM-JC41) is not possible. It is usually placed underneath the bottom bracket, fixed to the frame using a screw.
Details & Specifications
Shimano model number: | SM-JC40 |
Weight: | 8 g |
E-Tube ports: | 4 |
E-Tube Port type: | SD50 |
Type: | Junction B |
Component series: | Non-series components NON (All) |