Sram x3 78 speed rear mechthe sram x33 0 rear derailleur is here for another year bringing the beginners or light adventures outdoors this long cage derailleur is adjustable between 7 and 8 speed cassettes a great budget and extra value rear derailleur featurestechnology 11 actuation dir tspeeds 87capacity long 45tweight 210gbuysram componentsfrom chain reaction cycles the worlds largest online bike store