A good replacement for a Shimano 7-speed derailleur that was worn out and would no longer adjust. This derailleur adjusted quickly and works very well.

Seasoned bike mechanic. Replaced more RD's than I can count. Never really hated any of them until this.

I wanted a cheap but reliable RD for a project bike. Generally, the cheap Shimano parts work well for that purpose.

Absolutely hated this TX55. It would never shift perfectly regardless of adjustment. The problem, as far as I can diagnose, is the built-in right-angle "thingamajig" where the cable enters the RD. That design is a massive dud.

Left it on the bike for a year and probably had around 600-700 miles on it. Replaced it with a TX35 (yes, the cheaper RD but which has the conventional design) and that works perfect as expected.

Shimano overthought this design. It's a slight change but significant, and in my testing, a complete dud. TX35 for the win if you want cheap.

We replaced an original shimano on a 1980 Ross bike we are restoring. Although the old one still worked, this upgrade made exponential improvement to the rideability by smoothing out gear transitioning and creating more ease in hill climbing. It was also very easy to install.

So far so good. May not be the best for 2 track gills and trails, but certainly works.

Much better than my original Shimano. Can't beat the quality for the price.