Sram Force 1 Type 3.0 Rear Derailleur 11 Speed Medium CageThe Sram Force 1 Type 3.0 Rear Derailleur adopts all the technologies of SRAM 1x MTB to provide the fastest, quietest 1x shifting available. SRAM’s unique clutch system eliminates chain slack, providing for smoother, quieter, and more secure chain travel. This rear derailleur is engineered specifically for the 1x setup. The EXACT ACTUATION technology allows for fast and accurate shifts using SRAM’s 1:1 actuation ratio. These are both 10 and 11 speed compatible. The X-SYNC pulley features a 12-tooth design that helps control the chain’s lateral movement. The X-HORIZON “straight parallelogram” design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. The ROLLER BEARING CLUTCH’s one-way roller clutch controls chain tension for consistent shifting. The Cage Lock technology makes for fast wheel changes or chain installation. This is the medium cage version which works with 11-26 through 11-36 cassette setups. Weighs 261g.710845807848