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SRAM X4 Rear Derailleur, 9/8/7 Speed
Sram X4 rear derailleur for precise gear changes.
Free shipping over $35
See our return rules
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Compatibility
Only compatible with 7 to 9-speed SRAM shifters.
Ease of use
Direct Route Technology: less friction and loss of tuning.
Precision
1:1 ratio. 1 mm of drawn cable corresponds to 1 mm movement of the derailleur.
Weight
290 g.
Product Customer Reviews

Also not good provide information about compatibility
Bike rides brand new
As long as you are also using Sram 1:1 actuation ratio (ie non Shimano compatible) gear shifters this rear mech is excellent. The shifting is very clean and precise and stays correctly adjusted for a long time. Highly recommended. The only slight flaw is it requires a unique top jockey wheel when they eventually wear out which has 2 mounting holes offset rather than a central bolt so they are not a common part. Other than that brilliant.
I believe that there is a design flaw with this item. When the cable is attached, on the low ratios, the cable actually rubs the aluminium body, which adds to the gear change issues, particularly on the lower cogs no problem when on small cogs. The only solution is to carefully grind the affected area with a dremel or similar (if anyone is interested, I can supply photographic evidence of the fault) also, no barrel adjuster included
I have checked their website and have found some documentation which may help you with your set up: https://sram-cdn-pull-zone-gsdesign.netdna-ssl.com/cdn/farfuture/b53cP8DTiGCIRYRrClAP7qWSnlvu_fcM8-V...
There is also an excellent "community" page on the SRAM website which may also offer additional support as well as a great place to post your photos for added feedback.
There is no barrel adjuster on many SRAM MTB rear derailleurs. This adjustment is done at the shifter. This is how they are designed.
Many thanks,
Peter Lazarus UK Cycling Market Manager DECATHLON
Mohu jen doporučit pro samoopráváře, mohu jen doporučit
Ahoj, no co mám říci, po mechanické stránce je měnič v pořádku, ale stránka kompatibility? to ne, nesedí na řazení SRAM MRX21 gripshift používané na kolek Rockrider 340 a možný vyšší třída. Převodový index je stejný, pohyblivost dobrá, ale bohužel kompatibilní JEN s páčkami řazení SRAM X 4
Bordsteinkante runter gefahren und sofort Schaltauge abgebrochen...beim genaueren betrachten musste ich feststellen das einige Stellen an der Schaltung auch durchgebrochen sind, sodass ich alles tauschen konnte.
Ware wie beschrieben . Schnelle Montage möglich , wenn man schrauben kann . Leichte Einstellung .Günstiger Preis . Ich hoffe sie hält langer als die Letzte !
Ich verwende das Schaltwerk an einem alten "Vintage" Rennrad (ohne Raster-Schalthebel), also nicht mit den Original SRam Hebeln, daher vermisse ich die Feineintell-Schraube. Ansonsten bin ich mit dem Schaltwerk sehr zufrieden.
Perfecto para mi bicicleta.
Buena calidad precio para recambio de bicicleta de trote.
Perfecto
A un mes desde que me lo han puesto y sin ningún problema, realizando perfectamente el cambio de velocidades.
Me asesoró vuestro encargado de bicicletas, fue compatible porque el mando y el cambio eran de la misma marca. Inicialmente me llevé otro de otra marca y no era compatible. Saltaban de dos en dos. Vuestro encargado amablemente me lo sustituyó y mejoró.
Hola Ciclista ,
Gracias por confiar en nuestros productos , con esta valoración ayudarás tanto a otros usuarios para realizar su compra, como a nosotros para seguir mejorando con el producto.
Atentamente para cualquier consulta, el equipo de ciclismo DECATHLON
Saludos, Rubén , Monitor País de ciclismo ,
Teniendo el mismo cambio
Additional Product Information
Composition
Origin
Imported
Care instructions
Degrease, clean and lubricate your freewheel regularly to prolong its life. Do not clean using high-pressure water jets.
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
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Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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lowers overhead and indirect costs

SRAM X4 Rear Derailleur, 9/8/7 Speed
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
