Shimano Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla

TL;DR: Solid entry level Shimano rear derailleur that shifts reliably for 7 and 8 speed setups when installed and adjusted correctly. I picked up this Shimano Tourney TX RD TX800 as a replacement derailleur for a basic city and light trail bike. For this purpose it has performed as advertised. Once installed and dialed in, the shifting across the cassette is predictable, with gears engaging cleanly as long as the cable tension and limit screws are set properly. I paired it with a matching Shimano shifter and a standard 7 speed freewheel, and the components work together without drama. This is an entry level unit, so the materials lean more toward stamped steel and basic finishes rather than the lighter alloys you see on higher groups, but that is reflected in the price. For commuter and recreational riding, the extra weight is not very noticeable and the derailleur feels robust enough to handle daily use. The medium cage length provides enough capacity for a reasonably wide range cassette, which is helpful if the bike is used in varied terrain. Installation is straightforward if you have some familiarity with derailleur setup or are willing to follow a guide. The B tension, high, and low limit adjustments respond as expected, and the cable pinch bolt is easy to access. In my experience, once everything is set, the derailleur holds its adjustment well and only needs occasional minor tweaks as the cable stretches. This is only an opinion, not objective truth, since results will depend heavily on the condition of the rest of the drivetrain and the quality of the installation. Overall, for an affordable replacement or upgrade on a basic 7 or 8 speed bike, this derailleur is a practical choice that does what it claims to do. Thank you for reading my review here, I try to be helpful. Notify/write to me here on Amazon if you have any additional questions for me

So far so good, mounted it today, replacing an older, bent unit. I really didn't need to adjust it much.

Shimano replacement is OME for my e-bike.

you get what you pay for, I needed a replacement for my Fat Tire bike and it shifts great, I also paired it with a Shimano Finger Shifter.

Justo lo que esperaba y producto original

Fit perfectly on my Schwinn bicycle! Super easy install -just a few tools required-easy adjustment. Shifts smoothly. Looks to be all metal unlike my oem one. Great economical solution !

It fit and tuned pretty easy, but fell apart after 2 weeks of use. One of the gear idlers fell off. I had to reassemble it using spare parts. It's hard to trust it now. I can cause a bad derailment if I bump the derailer out of true. I wish the springs were stronger so they could return the Derailer to required position

Looks just like the one it replaced. Works well with the Revoshift.