SRAM Force 1 Type 2.1 Derailleur

Item: 50-4908
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To provide the fastest, quietest, and smoothest shifting available in a 1x11 derailleur, SRAM designed the Force 1 Type 2.1 derailleur to do just that. This derailleur's unique clutch system eliminates chain slack for fast and effortless shifting, plus more secure chain travel.


  • A dedicated 1x rear derailleur
  • Exact Actuation for fast and accurate shifts using SRAM's 1:1 actuation ratio
  • 10 and 11 speed compatible
  • X-SYNC pulley features a 12 tooth design that helps control the chain's lateral movement
  • X-HORIZON design limits all movement to the horizontal axis, which eliminates ghost shifting and shift force reduction
  • Roller Bearing Clutch has a one-way roller clutch which controls chain tension to ensure consistent shifting every time
  • CAGE LOCK technology makes for fast wheel changes or chain installation
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