Originally Posted by
KCT1986
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If I may chime in.
If you get a 7 sp Microshift shifter and use it with the RD-7400, it will shift correctly for 6 speed spacing. To shift 7 sp spacing, you will need a non-7400 series RD (most road RD from Shimano up to 10 sp).
Using a 7 sp shifter with the RD-7400 means that you keep most of the bike untouched but gets you brifters.
Chime in, by all means.
All of this is obviously outside of my area of bike component-understanding so forgive me if I sound clueless here... so what happens with the 7th click in the new shifter if I’m only running 6 speeds? Do I need to do something to stop the chain from shifting to a cog that isn’t there or is there just a blank click?