SRAM XX1 Twist Shifter: Modified to Friction or broken? (mint)
This was an 11sp rear shifter, that appears to be modified or broken. It turns and clicks in the way the older Gripshift shifters worked, with tiny little clicks that aren't real indexing. One option with this is find a way to remove the clicking completely and convert it to a dropper remote (people have done this, search google). Or, perhaps this can be fixed back to 11sp indexed.
Appears almost new cosmetically, read above about functionality