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🚴♂️ Shift Like a Pro, Ride Like You Own the Trail
The SRAM GX Eagle Rear Derailleur is a high-performance 12-speed long cage derailleur designed for mountain bikers seeking precision, durability, and style. Compatible with 10-50t and 10-52t cassettes, it features a robust mounting system, sealed cartridge bearings, and a sleek Lunar finish that complements the Eagle drivetrain ecosystem. Weighing just 1.3 pounds, it delivers reliable chain management and smooth shifting across the widest gear ranges.











| ASIN | B08B2W2QBH |
| Best Sellers Rank | #32,083 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Rear Bike Derailleurs |
| Brand | SRAM |
| Brand Name | SRAM |
| Case Material Type | Aluminium |
| Color | Lunar |
| Customer Reviews | 4.8 out of 5 stars 948 Reviews |
| Global Trade Identification Number | 00710845853487 |
| Included Components | Bike Parts |
| Item Dimensions L x W x H | 14"L x 10"W x 3"H |
| Item Highlight | SRAM GX Eagle 12-Speed Rear Derailleur - Long Cage, Lunar |
| Item Type Name | SRAM 12V GEARBOX. GX EAGLE LUNAR LONG CAGE |
| Item Weight | 1.3 pounds |
| Manufacturer | SRAM |
| Manufacturer Part Number | 00.7518.137.000 |
| Material | Multi |
| Material Type | Multi |
| Model Number | C8C090 |
| Mount Type | Standard |
| Mounting Type | Standard |
| Number of Items | 1 |
| Number of Teeth | 52 |
| Product Dimensions | 14"L x 10"W x 3"H |
| UPC | 710845853487 |
| Warranty Description | 2 Year Manufacturer |
D**A
Eficiencia
Excelente producto, recomendado.
J**Z
Great product
Great purchase!
R**R
Shifts great!
Works just as well as the XO1 that it replaced. I guess it’s a few grams heavier but obviously not something that anyone would feel while riding. I’m happy I saved the money over the XO1 as functionally just as good. These things are great once you dial them in. Best shifting that I’ve ever had in a mountain bike.
J**Y
Fantastic upgrade from SX
Two years ago I bought a Diamondback Sync'r which came equipped with 12-speed SX Eagle. It never shifted particularly well and had a severe chain slap problem. At the urging of my bike mechanic brother in law, I bought this derailleur and also a GX shifter and installed them on my bike. Night and day difference. Shifting is crisp and smooth even under load, and the chain slap is totally gone. Can't recommend this enough as an upgrade from SX. For a reasonable price it'll make your bike run better than ever. (Note that I kept the original SX/NX cassette and it works perfectly well with the GX derailleur.)
Á**O
Excelente producto llegó a tiempo
Excelente 🔥🔥🔥😎
K**W
Shifts great, "new" product seal was broken and paint was rubbed during shipping
The GX derailleur works great on my 2021 Giant Trance X 29 3. It had an SX derailleur 12spd on it and it just wasn't shifting correctly. I swapped the shifter and derailleur to GX and even though it has an NX 12 spd cassette which is on an HG hub, it works like it was designed specifically for it! Once I dialed in the B-adjustment with the white tool and the bike set for 30% sag it was shifting perfectly. It's probably the most crucial step. Otherwise you set it up right on the stand and then it shifts poorly once you're in the saddle. A tip on setting your sag, get on the bike and see where the rear shock rests, then take the air out of the shock, use your body weight on the seat to push the bike to that 30% position, hold the white tool with one hand tight against the jockey wheel, and adjust the screw with the other hand. Once those arrows line up it set and you never have to worry about it again. It's much easier to do by yourself than the tutorials make it out to be. Unfortunately someone between the seller and shipping broke the seal on the box. Which sucks because the box doesn't just hold itself closed and the derailleur was just bouncing around in the box rubbing up against the paperwork and the cardboard cover, which took a very small amount of paint off. I know I will damage it much worse some day, but come on, for a new product that is pretty disappointing. Since this was my second attempt at ordering this thing and having to wait for a refund from a product that was stuck in shipping purgatory, I decided to swallow my pride and just use it. It feels very solid, when it shifts it happens quickly and decisively, no more waiting around and listening to the chain grind around. I have ridden around town, but haven't taken it on the trail yet, but so far it seems quieter when dropping off of things
D**R
Exelente
Exelente
E**O
Calidad, excelencia
Excelente calidad, puntualidad y responsabilidad
J**E
Cambio
Para mí el mejor cambio para Ebike y para la disciplina enduro
W**E
Super Schaltung
Super kaufe ich gerade ein zweites Mal weil ich einen Unfall hatte und das schaltwerk verzogen war
T**Y
Nickel
Parfait,en remplacement d'un sx capricieux et ceci a bon prix
J**K
Meilleure qualité
J’en avais assez de tjrs régler le dérailleur sx 12v de chez sram alors j’ai opté pour du gx (dérailleur et shifter) j’ai également changé le pédalier et la cassette par du nx suffisant a la lecture des commentaires c’est sur, cela à un coût mais c’est bien plus agréable! Passage de vitesses fluide aucun craquements mêmes sur les changements en côte (déconseillé) et pour revenir au dérailleur et shifter la qualité est bien meilleure on voit bien que c’est une gamme au dessus !!!
M**I
Risparmio assicurato oltre alla affidabilità. Consigliatissimo
Prodotto ottimamente imballato, confezione originale e cambio immacolato. Venditore affidabile, veloce nella consegna, prezzo super conveniente. Da tenere tra i preferiti per gli amanti delle 2 ruote e del fai da te. Consigliato
Trustpilot
3 weeks ago
3 days ago