Formula SG-135 Lockring tool- Mtbr.com
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  1. #1
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    Formula SG-135 Lockring tool

    Forgive my newbie question but the splined freewheel on my new Kona Unit does not have a splined locking mechanism to change cog's. I see a clean looking lockring that seems to be an odd size. Does anyone know what tool I need to use to remove this to change cogs? I dont want to strip the heck out of it. I have a nice 17t cog for training so that climbs will be a bit worse on me until i switch back to 18t on race days etc...

    Thanks in advance.

  2. #2
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  3. #3
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    Be sure to measure the OD and ID of the notches of the lockring and compare to what that bottom bracket tool will fit.

    It may actually be this one instead

  4. #4
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    Quote Originally Posted by arphaxhad
    Be sure to measure the OD and ID of the notches of the lockring and compare to what that bottom bracket tool will fit.

    It may actually be this one instead
    Thanks, found a bike co-op that has a tool share program. Gonna see what tool works best there and then go buy one.

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