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Caliper piston press tool

  1. #1
    Lifer Punjistick's Avatar
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    Caliper piston press tool


    I just found out about caliper press/spreader tools. I always used a C-clamp or wedged a screwdriver in there to push the piston back. I'm thinking about picking one up but it seems there are a bunch of different ones. I think I would like one small enough for a rear caliper.

    Does anyone use them? What do you recommend?

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  2. #2
    daideó Rambunctous's Avatar
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    Re: Caliper piston press tool

    Apiece of flat stock with a hole drilled in the middle with a bolt and nut will work fine. Make a small one for bikes, a big one for cars. You could even make one for dual pistons.

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  3. #3
    Lifer golden chicken's Avatar
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    Re: Caliper piston press tool

    Channel locks.

    The problem with c-clamps and other screw type piston pushers is the force multiplication. You cannot always feel the piston is stuck or a hose is partly blocked when you are screwing the piston home. If you squeeze with channel locks, you can feel when there is too much effort.

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  4. #4
    TWINS! xrocket21's Avatar
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    Re: Caliper piston press tool

    And then those motherfuckers you have to push and turn at the same time....

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  5. #5
    Lifer SwiftTone's Avatar
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    Re: Caliper piston press tool

    How about tools to remove pistons? Anything out there that will prevent damage?

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    Four wheels move the body, two wheels move the soul.

    Current: 2016 S1000XR. Past: S1000R, Streefighter S, Monter S2R1000, RC51, CBR600

  6. #6
    Backwoods lobster boy number9's Avatar
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    Re: Caliper piston press tool

    Quote Originally Posted by xrocket21 View Post
    And then those motherfuckers you have to push and turn at the same time....
    You mean these guys? https://www.amazon.com/Spreader-Remo.../dp/B07GT1MNV6

    These tools work really well.

    Quote Originally Posted by SwiftTone View Post
    How about tools to remove pistons? Anything out there that will prevent damage?
    No personal experience but they do exist: https://www.revzilla.com/motorcycle/...xoCuZYQAvD_BwE

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  7. #7
    Lifer nt650hawk's Avatar
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    Re: Caliper piston press tool

    compressor. with an air nozzle with a rubber hose on the end. i use different size wedges (sockets) to restrict the movement of the freed piston to allow the stuck piston to move. I'll sue a rag to catch the piston that is going to blow out. DO NOT use your finger to catch it. i can only imaging the pain or finger getting jammed between the caliper housing and piston in some assimilates.


    my thoughts on this is if i can not easily press the piston back into it the caliper with you fingers it is time polish the piston. some people will buy new. I still have OE pistons and seals in on most of my bikes. If any seals have a tear, (usually the wiper seal) only then is when i'll replace the ring.

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    Last edited by nt650hawk; 02-22-21 at 12:55 PM.
    Gino
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  8. #8
    Lifer golden chicken's Avatar
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    Re: Caliper piston press tool

    Just pump compressed air into the caliper and the piston will pop out. Or if you're prepared for the mess, uninstall the caliper and pads and pump the lever/pedal until it pops out.

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    What's the difference between a bolt and a screw?
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  9. #9
    Lifer golden chicken's Avatar
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    Re: Caliper piston press tool

    Quote Originally Posted by xrocket21 View Post
    And then those motherfuckers you have to push and turn at the same time....
    I have the harbor freight set. It's served me well. In a pinch I'll use needle nose pliers.

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    What's the difference between a bolt and a screw?
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  10. #10
    Lifer nt650hawk's Avatar
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    Re: Caliper piston press tool

    Quote Originally Posted by golden chicken View Post
    I have the harbor freight set. It's served me well. In a pinch I'll use needle nose pliers.
    pipe wrench will be better at grabbing the piston. the Wrenches teeth bite deeply into the piston.

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  11. #11
    Lifer golden chicken's Avatar
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    Re: Caliper piston press tool

    Haha, no, you use the needle nose pliers in the recesses in the face of the piston to turn it.

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    What's the difference between a bolt and a screw?
    First you screw, then you bolt.

  12. #12
    Unsafe At Any Speeds Jim's Avatar
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    Re: Caliper piston press tool

    are you talking about something like these: https://www.amazon.com/BikeMaster-Br...4025571&sr=8-2

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  13. #13
    Lifer SwiftTone's Avatar
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    Re: Caliper piston press tool

    Quote Originally Posted by number9 View Post

    No personal experience but they do exist: https://www.revzilla.com/motorcycle/...xoCuZYQAvD_BwE
    When I rebuilt my Brembos the pistons were not hollow. They had some plastic cover looking thing that I couldn't figure out how to remove. The BMW rebuild kit included new pistons so I didn't mind destroying the old ones. anyone have experience with removing the middle cover of the piston?

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    Four wheels move the body, two wheels move the soul.

    Current: 2016 S1000XR. Past: S1000R, Streefighter S, Monter S2R1000, RC51, CBR600

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