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

These are great shifters, but the position of the thumb shifter makes it impossible to change gears when going down the drop. Which is a shame, because with a gear shift indicator and a convenient thumb shift cover position, these are really unique and really good shifters. But I found a way to get the best of both worlds with this awesome stuff https://www.amazon.com/dp/B019EZD9WW/ref=cm_sw_r_sms_awdb_AWjgzb3GY6RVM. It's a malleable plastic that becomes hard at 100 degrees Fahrenheit (or less) like any conventional plastic, but when heated to 150 degrees it becomes flexible like putty. This allowed me to form an extension of the existing shifters that is angled perfectly so I can use the thumb shifters when riding either hoods or drops (see pics). It also works surprisingly well, and now I really love the switches. The only reason I can understand why Shimano didn't make it themselves is that no one would buy their higher end derailleurs as they have more features. I am very happy with this mod. I hope you try it and find it useful