sram x3 rear derailleur - 7-8spd long cage black: black 7/8 speed long

Sram: sram x3 is a great beginners or light adventurers rear derailleur.
The x3 rear derailleur sets the standard for opening price point shifting performance.
Driven by srams patented 1:1 actutation ratio, the x3 offers an intelligent blend of performance and value.