Best Bike Derailleurs of 2026

"I swapped out my old crankset and derailleur and was really impressed with the great value and precise chainline this front derailleur offered. After a bit of fine-tuning, it delivered smooth, fast shifting and helped me get more speed from my bike. Very pleased with the upgrade!"

"My new Shimano Altus front derailleur made my bike look sleeker and more stylish than ever. I’m a very satisfied customer—I'll definitely stick with Shimano and Amazon for future purchases!"

"Upgrading to this Altus FD gave me the indexed shifting I wanted at a low cost. It was easy to install and adjust, and works perfectly with my new shifters. The only downside was the shipping box was a little crushed, but nothing was damaged, so I’m happy overall!"

"I upgraded from the SX derailleur and immediately noticed a night and day improvement in shifting performance. Now, my bike shifts crisp and smooth, even under load, and the chain slap issue is completely gone. For the price, this upgrade made my bike perform better than ever."

"Switching to this derailleur from the original XO1 saved me money, but I didn’t sacrifice performance—it functions just as well. The shifting is the best I’ve experienced on a mountain bike. Any weight difference is negligible and not noticeable during rides."

"I replaced my entry-level part with this and was impressed by the far superior shifting quality without breaking the bank. The all-metal build feels sturdy, and the return spring is strong and reliable."

"I found the Shimano RD-TY500 rear derailleur to be extremely reliable and precise, offering smooth, crisp gear changes every time. Installation was a breeze and, considering the price, I think it's an excellent upgrade for anyone on a budget."

"After installing this derailleur on my 25-year-old Schwinn, along with a new chain and freewheel, I was impressed by how accurately and smoothly it shifts. The setup was straightforward, and it brought my bike's performance back to life."

"While I appreciated the budget-friendly price and solid construction, I did notice that there were no instructions included, which made installation a bit tricky as a first-timer. After some trial and error, though, my son's bike was up and running, and the derailleur has been holding up well to his rough riding."

"I was impressed with the easy installation and perfect fit of this derailleur. The replacement went smoothly, and after some quick adjustments, I was back on the road with smooth shifting."

"The build quality feels robust and the instructions in English were a nice touch. It worked flawlessly with my trigger shifters on my 7-speed bike."

"After bending my original derailleur, I installed this one on my Lectric XP 3.0 and it worked perfectly. It was a great replacement and a breeze to set up."

"I used this derailleur to replace a broken gear for a child at a charity. The product was reasonably priced and simple to install if you know how to handle bike repairs. The trickiest part was opening the chain, but overall, it worked perfectly and the child was thrilled to have his bike working again. It comes with everything you need for a gear repair."

"This derailleur matched my old one exactly—the screw holes lined up and the chain fit through perfectly. Installation was a breeze, and everything worked as intended."

"I replaced a broken derailleur with this model, thinking it was just a rare issue before. Unfortunately, after a few rides, it broke in the same way as the original—the plastic parts didn't hold up, and it snapped when I pedaled hard. Next time, I'll go for a full metal one instead."

"I upgraded my vintage GT mountain bike and was impressed by how easy the setup was and how perfectly it shifts. The only hiccup was initially trying to use it with an 11-48 cassette—it only supports up to 46t, so make sure you check that. Once I switched to an appropriate cassette, everything worked flawlessly."

"I’m really happy with this derailleur! Installation was straightforward, and the clutch feature is fantastic—I haven’t experienced any chain slap or dropped chains since the upgrade. Just had to loosen the clutch a bit out of the box, but after that, the shifting has been super clean."

"I bought this for my 1x7 Schwinn Boundary during an upgrade. The shifting is fast and smooth, and it works well with the matching Deore shifter and cassette. Only minor issue: it didn’t reach the two largest sprockets on my frame, but adding a Wolf Tooth roadlink addressed that easily. Overall, highly recommended."

"I noticed the dimensions on the product page are incorrect, but thankfully the hanger itself was made to the right specs. It fits perfectly, and the threads match what's standard for rear derailleurs. Glad it wasn’t made to the wrong size!"

"My grandson rides his bike hard—lots of wheelies—and this derailleur hanger has held up even better than the original on his $400 bike. Really well-made and worth the money."

"I matched my old, stripped hanger to the photo and it was a perfect match. The brackets arrived fast, fit exactly, and now I have a spare ready to go."

"I needed a direct replacement after my old derailleur got damaged, and this one fit perfectly. I'm not a bike expert, but it worked flawlessly on my Walmart multi-speed bike."

"Installing this derailleur was a breeze. The hardest part was removing my rusty old chain, but once it was on, the adjustments were simple. The price-to-functionality ratio is unbeatable for my commuter bike that faces a lot of wear and tear."

"I did receive mine with some damage, but I had spare parts on hand. Just be aware that shipping issues can happen, but otherwise, this is a solid product at a great value."

"I found the installation to be quick and simple, only needing to remove a wheel and bend the bracket—no chain tool required. The shifting is just as good as the original part."

"My son's bike needed a new derailleur, and this one matched up perfectly. For the price, it's a solid replacement, though the main mounting part is plastic. If you’re not familiar with derailleur adjustments, just look up a quick video."

"This replacement derailleur fixed my bike's skipping gear issue right away. The installation was a bit tricky and time-consuming due to the lower jockey wheel, but after some effort, everything fit and performed as expected. The overall quality isn’t quite as high as the original, but it gets the job done."

"I found the installation process to be quick and straightforward, and it was an exact fit for my 8-speed REI gravel bike with a Shimano Altus Derailleur. I really liked that the cage could be opened to insert the chain without messing with a link. Overall, for the price, this is a solid choice for casual riders."

"This derailleur was simple to set up on my 7/8 speed bike, and shifting is smooth and precise. It fits direct mount and was up and running in just minutes. In my experience, it’s a great value for the price."

"I needed a replacement for my teenager's main ride, and this product was an upgrade over the original. It arrived quickly and got my kid back on the road right away, which was a huge plus."