SpeedBox 1.2 for Shimano (E8000, E7000, E6100, E5000)
It’s very easy to install the SpeedBox tuning kits. We have prepared instructions and videos for your convenience. You can do it in a few minutes.
Printable instructions for download: Text, graphics E7000 a E6100 and graphics E8000
Photo tutorial: in progress
FAQ: in progress