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Thread: bigger rotors

  1. #1
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    bigger rotors

    Hi new to the forum and forgive me if I sound dumb but I am new to ridding. I have a boardman 650b with suntour radion xc 120mm forks. I want to upgrade my rotors too 203mm is this possible with these forks and what adaptor would I need? Thanks.

  2. #2
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    Try posting this in the Brake Time forum.

  3. #3
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    Probably, and I don't know. SRAM has a table of adapters for different mount and rotor combinations somewhere. Probably the manual, failing that, the web site. Shimano's pretty good about documentation, so I bet it's on their web site for their stuff.

    I can't help feeling like there's more to this. What are you hoping to accomplish?
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  4. #4
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    Details*- SR SUNTOUR Cycling

    According to Suntour 185mm is the max size rotor. You'll have to decide if your want to go beyond the recommended max spec.
    2013 Trek Marlin 29er stock (blue)
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  5. #5
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    if you are new to "ridding" what is your reference that makes you feel you need larger front brakes...
    2014 Nail Trail 29er

  6. #6
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    Quote Originally Posted by time229er View Post
    if you are new to "ridding" what is your reference that makes you feel you need larger front brakes...
    Good point!

  7. #7
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    I was thinking of doing the same thing to my front but with a 180mm rotor.
    Isn't this one of the cheapest-easiest first upgrades to improve your bicycle's stopping capabilities?
    I guess that's the reasoning behind it...

    Edit: Just saw the discussion on the brakes forum about this

  8. #8
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    Coz I'm 18st and ride pretty hard so need extra power.

  9. #9
    Fat-tired Roadie
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    The rotor actually may not be a great place to start. Not that a bigger rotor shouldn't have some benefits, although I can't say I've noticed them on my bikes. But you should really have enough stopping power to pitch yourself over the bars already.

    What brake do you have?
    "Don't buy upgrades; ride up grades." -Eddy Merckx

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