

🚴♂️ Shift into the fast lane with precision and durability!
The THALOUS Bicycle Rear Derailleur supports 6 to 9-speed drivetrains with a direct mount design for easy installation. Crafted from high-quality aluminum alloy, it offers robust durability and smooth, reliable shifting across mountain, road, and city bikes. With a 4.5-star rating and professional customer support, it’s a trusted upgrade for serious cyclists seeking performance without the premium price.









| ASIN | B0DMLKPYKL |
| Best Sellers Rank | #101,258 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #51 in Rear Bike Derailleurs |
| Brand Name | THALOUS |
| Case Material Type | Aluminium alloy |
| Color | 6/7/8/9 speed |
| Customer Reviews | 4.5 4.5 out of 5 stars (174) |
| Item Weight | 9.12 ounces |
| Manufacturer | THALOUS |
| Manufacturer Part Number | TH-Rear789S-US |
| Model Number | TH-Rear789S-US |
| Number of Teeth | 18 |
B**S
Easily Adusted and Smooth Shifting
Nothing negative to say about this derailleur. Does everything it's supposed to and does it well. Don't understand why anyone would pay for more expensive derailleurs.
A**R
Good quality
I really like the functionality of this derailleur, I performs very well and I am very pleased with my purchase.
N**K
Upgraded my Walmart bike with this
I've never worked on a bike before. After a bit of YouTubeing. I tried to put this thing one my cheapo Walmart bike. And I was successful. Took a little tuning to get it so shift thru all the gears but once I got it on and working I can tell this this will last way better then the piece of plastic garbage that came with and broke on the bike.
T**R
Excellent derailleur for 8 spd budget setups
Great for people building a bike or replacing a derailleur on a budget. Smooth reliable Shimano performance, at a cheap price. Shifting is smooth and easy to adjust. Quiet. Nice finish. Only reason not 5 stars is you can get a nice Microshift acolyte with a clutch for not much more. Still excellent for the price
A**R
Works fine
Works fine... after I sorted out the Direct Mount required me to take a direct mount extension off the previous mount off the old derailleur. After adjustments, all 8 rear gears work fine in any of the 3 front gears... This derailleur looks to be a bit heavier duty model than the OEM one. Uh, yeah, I did replaced the old with the new without YouTube or using some manual...
G**.
Easy install
The derailleur is high quality and easy to install. It functions as a smooth shifting replacement and has not given me any issues so far. It is quiet and sturdy.
W**S
High quality exact fit
Perfect fit. Easy installation. Very little adjustment needed
T**S
Amazing rear derailleur
Paired with a Shimano front shifter and Shimano 8-gear set this derailleur works very smoothly and accurately.
G**E
After installing the derailer on the first ride it fell to pieces. The gears and parts i tried to find but couldnt. They are somewhere in the local reserve.
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