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I have a Trek FX1 and the rear hub size 135x5mm. I want to change the hub to 135x10mm; is that going to be a problem?

Also, my bike is v-brake system. If the hub I want to fit has a disc brake mount, will that work?

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  • AFAIK, 135 mm hubs are 10 mm. 5 mm does not exist. Are you sure of your data ? You can use V-brake with disc hub with no problem, provided you have a rim for rim brakes. In my opinion it is a good idea to use a disc-brake hub for a V-brake wheel, as you will be able to re-use it int the future if youo get a disc-brake bike.
    – rvil76
    Commented Oct 12, 2022 at 7:39
  • Yeah i am sure about the Formula FM31 alloy, 135x5mm QR that’s from the web site of trek company, and thanks for the tip about the hub
    – Emadness
    Commented Oct 13, 2022 at 8:06

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FM31 corresponds to the standard 135 mm hub definition. You can use any 135 mm hub, disc or not. 5 mm is the diameter of the skewer inside the hub.

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  • Thanks all clear
    – Emadness
    Commented Oct 14, 2022 at 21:21

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