There are snap ring pliers which would probably be the easiest. I used a small screwdriver.
This ^^ .. the once those are off, it's just 1 bolt that holds them to the frame. can't remember if it's allen or torx, but i think it's torx.. T-35 maybe? T-30? i don't remember.. anyways.. snap ring pliers are great, small eye glasses screwdriver and some patience works just as well.. if all else fails.. bigass hammer.