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Trying to sort a rubbing issue and keep reading things like "push BOTH pistons back in, squeeze lever to center pistonS" but it looks to me like there is only one piston? When I squeeze the lever with the pads remove I just see one coming out from the left, the other side just looks like a hole. Is that right? Photo: https://i.postimg.cc/dV4LGGrZ/IMG20240707202807.jpg

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  • Hi, welcome to bicycles. It might help if you told us the year or model number of your brakes, in case there have been changes over time. It would definitely help us if you took some photos and edited them into your question.
    – DavidW
    Commented Jul 7 at 23:48
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    That’s not right. There are two pistons and two pads in a GRX caliper. Did you ever (repeatedly) squeeze the lever with out a disc in the caliper?
    – Paul H
    Commented Jul 8 at 4:12
  • Added a photo but it's waiting for approval
    – Omiron
    Commented Jul 8 at 10:12
  • i.postimg.cc/dV4LGGrZ/IMG20240707202807.jpg
    – Omiron
    Commented Jul 8 at 10:13
  • @Omiron Are you the one who posted the question? If so please merge your accounts. If not, how can you be sure you're looking at the same thing OP is?
    – DavidW
    Commented Jul 8 at 17:03

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