I have a 2020 Specialized Sirrus X with 11 speed 1x groupset. I recently installed a second chainring on my crankset; an extra low granny gear (24t vs 34t) and it's made climbing steep grades (17%+) effortless. My original plan was to just lift the chain with my fingers to shift, in the super rare event I would even need the 24t cog. I really wanted to keep the handle bars clutter free, after all, that is what sold me on the idea of a 1x groupset. Maybe this is a dumb idea having the shifter on the downtube, but I thought I'd give it a try. When my triangle bag is on the bike, this space is too small for a water bottle, so it's utilizing wasted space. An I-Spec mount shifter might be a smaller profile if I were to do this over. There's also the option of using a friction shifter.

Here is the Carbide Create file for the bracket I made:
http://etischer.com/shapeoko/downtube...

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