Disc rotor sizes...

Alex-t
Alex-t Posts: 13
edited August 2010 in MTB general
forgive my ignorance and i apologize in advance if it sounds stupid :lol: but...

If i have a 160mm disc brake on the front and i want to change it to 185 or bigger do i need a whole new calliper or can i just use a different mount?

Comments

  • Anonymous
    Anonymous Posts: 79,667
    just a different mount and rotor.
  • peter413
    peter413 Posts: 5,120
    You will also need to check your fork/frame can take a bigger rotor
    Transition Patrol
    Cube LTD 29er

    Glentress Trailfairies
  • MountainMonster
    MountainMonster Posts: 7,423
    What peter said. If the forks can take it all you will need is a new mount.
    My London Road
  • Steve_F
    Steve_F Posts: 682
    I've changed rotor size quite a few times and it hadn't even dawned on me that certain forks might not take bigger rotors, where can you find this out, manufacteurs websites?

    BTW - superstar components is a great place to get cheap rotor and adaptor combos.
    Current steed is a '07 Carrera Banshee X
    + cheap road/commuting bike
  • dresbo
    dresbo Posts: 129
    The max is nearly always 185 or 205 for a 32mm fork. Manufacturers website will tell you for your specific forks.

    This is from the fox website (so Fox specific):

    What is the maximum size disc rotor I can put on my fork?
    32 & 36mm forks are designed to use disc rotors with an outside diameter of 160-205mm. 40 models are designed to use rotors with an outside diameter of 200-225mm.

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