

⚡ Shift into adventure mode with Shimano GRX – where precision meets grit!
The Shimano GRX RD-RX400 is a 10-speed rear derailleur engineered for gravel and mixed terrain cycling. Featuring Shadow+ technology and an adjustable chain stabilizer, it delivers smooth, reliable shifting while minimizing chain bounce. Built for durability and optimized for Shimano GRX double cranksets, this derailleur ensures consistent performance on challenging rides.
| ASIN | B07RVXQWKV |
| Best Sellers Rank | #694,231 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #687 in Rear Bike Derailleurs |
| Brand Name | SHIMANO |
| Customer Reviews | 4.4 4.4 out of 5 stars (83) |
| Date First Available | May 25, 2019 |
| Global Trade Identification Number | 04550170448899 |
| Included Components | Bike Parts |
| Item Dimensions LxWxH | 5.91 x 5.91 x 3.94 inches |
| Item Package Dimensions L x W x H | 7.4 x 4.92 x 3.74 inches |
| Manufacturer | Shimano GRX |
| Model Name | C8C075 |
| Model Year | 2019 |
| Number of Items | 1 |
| Package Weight | 0.46 Kilograms |
| Part Number | IRDRX400 |
| Size | SGS - long |
| Suggested Users | unisex |
| Warranty Description | 2 Year Manufacturer |
A**R
Know the replacement brand
Not applicable with other brands of derailleurs Waiting on refund after returning
R**.
When you need to get on the bike and you need it fast......
While riding my new gravel bike, I happened to notice that the cranks would not roll backwards. One trip to the bike shop, after almost 1,015 miles later, I noticed my chain was literally sawing through the cage of my rear derailleur. I ordered this device to replace what I had lost. It arrived on time, the rear derailleur was in great condition, (new). When you want to get up and running this is the part that you can count on. Great.
M**O
Bought as a replacement for the same model after I damaged it beyond repair. Worked just like the original as you'd expect.
K**E
Das Teil ist gut
B**T
Très bon produit facile à installer ça reste du shimano
R**R
Very good. More range than spec'd.
C**E
Ce n’est pas la version 812 en 11V mais la version RX-400 en 10V
Trustpilot
2 weeks ago
2 days ago