Setting the standard for entry level performance and value, the X. 3 trigger shifter provides proven SRAM 2-lever trigger shifting performance at a more affordable price point. The set features proven ergonomics and SRAMs award-winning 1:1 actuation. The Sram X3 Rear Trigger Shifter is a new 7 speed trigger shifter featuring 1:1 Actuation Ratio - and SRS technology. Closed ends. Large end flanges. Size: 22mm x 130mm. New trigger option. Speeds: 7. Proven superior shift technology: 1:1 Actuation Ratio. Easy to read Gear Indication Window. SRAM 1:1 rear derailleurs, SRAM or Shimano front derailleurs. Weight: 262g per pair.