Review on Upgrade Your Shimano M2010 with JGbike 9 Speed 1x9 🔧 Groupset: Right Shift Lever, Shadow Rear Derailleur, 11-40T Cassette, and X9 Chain by Eugene Cox

Overall I'm happy with this kit, although I think the shifter doesn't match the derailleur. After some time working on the setting (with the Bog Blue Book at hand). I got as close as I could to getting the toggle right, but in some cases it takes two clicks to toggle up or down. BUT during my test ride the extra teeth on the rear sprockets were immediately noticeable and worked very well. After learning that it took me two clicks to shift in most cases, shifting became a breeze. As this is my stock bike (2015 Diamondback Overdrive) and I wanted to save money I am happy with the result. Everything clicked fine. I'll keep tweaking and report if I can make the shift a little better.