The X4 rear derailleur combines the best elements of SRAM shifting with a stylish design in an affordable price point. Intelligent material selection yields a lightweight high performance derailleur. A compelling option for your 8-speed (or 7-speed) shifting needs. Weight: 302g.
Speeds: 8/7 speed
Material: Alloy B-knuckle, alloy outer link,
Outer Cage: Steel
Inner Cage: Grilon Composite
Features: Direct Route Technology for lighter effort shifting, Replaceable pulleys