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  1. #1
    mtbr member
    Reputation: IRONMAN1518's Avatar
    Join Date
    Jul 2008

    Anyone out there using a 140mm rear disc?

    Been thinking about trying one, my ridding habits have had to be toned down due to injuries/operations. Found a new 140mm disc,rotor and I have the adapter already.. Bike is an Orbea Oiz, with Crossmax SLR wheels, Shimano centerline discs (both 160mm); BB7 brakes, which work very well for me. It's a great ride for me, a larger rider (225lbs and losing).

    Was just wondering how they have worked for other riders out there. Would really appreciate any input/info, please?
    Thanks lots!
    Training on Hills Builds Character, That's How I Got To Be One!

  2. #2
    mtbr member
    Join Date
    May 2006
    If you never overheat your brakes then you should be fine.

  3. #3
    mtbr member
    Reputation: Shalom's Avatar
    Join Date
    Nov 2008
    Used them on the back when I was seriously racing. Was good for racing. But could only ever use them racing, as had issues with overheating and brake fade. I need at least a 160 on the back for normal riding.

  4. #4
    Join Date
    Feb 2008
    ur 225. dont use 5" rotors.

  5. #5
    What could go wrong ...
    Reputation: Zoke2's Avatar
    Join Date
    Nov 2007
    On my FS bike I run 180 up front and 140 on the back and it was the best upgrade I have done to the bike. A 160 on the rear was way to easy to lock up and the 140 is just right ... I can lock it up if I need to, but it is the most responsive drag brake set up I have ever used. I have never had brake fade with the 140 on the back and i am just over 200 lbs. Most of the stopping power is in the front brake anyway so you should be fine with a 140 on the back.
    I used to ride to Win ... Now I ride to Grin

    While my guitar gently weeps, my bike sits there mocking me

  6. #6
    mtbr member
    Reputation: ktm520's Avatar
    Join Date
    Apr 2004
    What Zoke2 said. Same setup on a hardtail 29er.

  7. #7
    mtbr member
    Reputation: Mr_Clean's Avatar
    Join Date
    Oct 2010
    My 26" 4 inch travel FS is setup with 140/160. I ride XC, works great for me.

  8. #8
    mtbr member
    Join Date
    Sep 2009
    Ran a 140mm XTR rotor on my hardtail. It worked fine, but it wore much quicker than 160 I had previously fitted. I've got 160mm F/R now because of my frame. Can't offer much of a comparison because I upgraded my brakes at the same time.

    For the record, I weigh 150, so my reply probably isn't very relevant

    BMC TE01 2011- RS SID Race, ZTR Olympics, X.7/X.9/X.0, 3T

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