The 7900 front mech, along with the front shifter that controls it, has a different cable pull ratio to any other Shimano front mech, so they only work together – so no mixing and matching of parts ...
Many riders seek lower gearing on their road bikes. Some need it to reduce pain in their back or knees, and a good number of cyclists want easier gears for climbing. Other riders require a low gear ...
While shifts between the sprockets on a bike's cassette are generally quite fast and crisp, going between the chainrings up front is definitely a slower, more awkward affair. In an effort to make ...