Compatible with only single chainring crankset. Rear derailleur is a special 7-speed type, single tension design, with normal top tensioning. 11T pulleys, sealed, 15T capacity. Air tank has schrader valve. Tank cage 500cc.
System comes with two airtanks.
R.T Quartz Rear Derailleur Works with standard cable pull shifter from SRAM or Shimano. Pulley cage design prevents mud buildup. Upper pulleys ae floating, self-centering design. Upper pulley is always the same distance from the cogs for consistent shifting performance. R.T Plasma Rear Derailleur Works with standard cable pull shifter from SRAM or Shimano.