Review on 🚲 Enhanced Shimano Tourney ST-A070 3x7-Speed STI Lever Set for Improved Performance by William Chavez

. Took them as an upgrade on a Franken bike that already had a Tourney A073 crankset and had an old FD derailleur -TZ and an old Shimano TZ derailleur as I figured I'd at least try to match the derailleurs to the rest of the group. I really enjoyed updating and using the brifters (as the thumb shifter is pretty intuitive) and with a DIY setup there were no issues with the derailleur set. However, after many hours of fiddling and tweaking, I couldn't get the derailleur to reliably shift between all three gears on my Tourney chainring and I ended up sticking it in my LBS hoping they could adjust the suction cup. After a few more tries they both tried the new Tourney FD before realizing I needed a Tourney A073 (not Berg) front derailleur before it would pull properly and work properly. However, it's a great option. to switch to a faster setting from old switches or an older SIS setting.