SRAM REAR FORCE ETAP AXS E1 12s BLACK 36T MAX BATTERY NOT INCLUDED (P)Lighter, faster and more capable than ever, the Force AXS rear derailleur does it all in style Covering cassette ranges from 10 28T up to 10 36T, this wireless wonder has a new, lighter cage and a larger pulley wheel to increase drivetrain efficiency Chain management technology keeps the drivetrain quiet and secure AXS enabled for easy setup, personalization, and reliability Compatible with both 2x and 1x drivetrains Larger X SYNC pulleys for