Can a Rival Flattop PowerLock be installed and uninstalled repeatedly, or does it need to be replaced with a new PowerLock after being removed one time? All 12-speed road PowerLocks are a one-time use part that needs to be replaced after being removed. The part number for the 12-speed Flattop chain PowerLock 4 -pack is 00.2518.036.003. See your local bicycle dealer to order. Related articles Are Rival 12-speed PowerLocks different from SRAM Eagle 12-speed PowerLocks? Will a Rival 12-speed Flattop road chain work on a SRAM Eagle drivetrain? Why do Rival 12-speed road chains have links that are flat on one side? Are oval 2x chainrings compatible with Rival eTap AXS cranksets? Is a special chain tool required for new RED and Force eTap AXS™ road chains?