Montato su una MTB Rockrider 520 al posto dello scadentissimo e plasticoso X3. Questo X4, perfettamente compatibile, appare più robusto, non fosse altro perchè non è tutto di plastica. Per quello che costa fa il suo dovere. Poi per meno di 20 euro non si può chiedere la luna. Read more

El producto es básico pero en realidad es de muy buena calidad bastante recomendable Read more

Este desviador trasero sram por cuatro. funciona perfectamente. Vale para bicicletas de 8 velocidades. Va de lujo y no tardan nada en traerlo a tu casa. Fácil de montar. Además va montado sobre una patilla y no sobre el chasis. Ojo con esto Read more

Günstiges Schaltwerk, mit guter Qualität und hervorragende Schalteigenschaften. Read more

La qualité est très bonne. De plus, on peut démonter les galets pour installer le dérailleur sans changer la chaîne. Et concernant les réglages : très faciles et précis. Mais attention : c'est un dérailleur SRAM donc pour manettes SRAM en rapport 1:1 donc si vous avez une manette shimano, ça n'ira pas avec ! Read more

SRAM x4 broke within 4 weeks of buying bicycle while riding a trail (Mushrif Park Bicycle Track). The spring inside it broke and was not holding chain tension. Someone told me I must have hit a rock, but I'm sure not. I could be spring failure. Finding this offline was impossible on Dubai strangely. Tried calling all the major brands, visited many cycle shots in Satwa, finally ordered this. After replacing with this, its working as it supposed to be, only completed maybe 50 kms so far on this new set. I hope it lasts. If not, might have to change the groupset. Build quality and print on it looks same as the original. The product did not come in SRAM packaging, so no comments if it is indeed original or copy, but built quality looks pretty solid comparatively. Read more