140mm rear disc rotor?- Mtbr.com
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  1. #1
    mtbr member
    Reputation: top_ring's Avatar
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    Feb 2004

    140mm rear disc rotor?

    I`d like to convert my cross bike to disc and have been reading some of the posts on "disc size". I understand that it is possible to run a 140mm disc on the rear. I Have two questions. Firstly, where can I pick up a 6 hole, IS 140mm rotor? And secondly, What cable aspired caliper brake would function the best (hassle free - with no adapter headaches) for this application?

    Thanks for helping out.

  2. #2
    On MTBR hiatus :(
    Reputation: Speedub.Nate's Avatar
    Join Date
    Dec 2003
    Any 51mm IS-compatible 160mm front caliper will work in the rear with a 140mm rotor, no modifications necessary.

    140mm rotors are common and easily available through the usual sources, both online or locally.

  3. #3
    mtbr member
    Join Date
    Jan 2004
    Hope do 140mm rotors

  4. #4
    I love Pisgah
    Reputation: Duckman's Avatar
    Join Date
    Jan 2004
    140s are indeed harder to find, at least compared to the 160s and up. I got 2 Formula 140s from Stans. Of course forget about paying anything less then retail. I also wonder since as of 04, all they're rr's are 160s now...that the 140s may start getting harder to find. I use a 140mm on 2 NRS builds and love it for epics to xc racing, at least here in the SE mtns of N Ga, NC, etc. With any common brake like Avids, Hayes, etc..just run the front IS mount(Cambria's got'm for both brands$12-ish) in the back(or buy 2 front systems, but your lines will be too short if your running prebleed hydros). I've run both these brands, as well as the Formula B4SLs and Pros, all with 160/140 setups. Just as strong for all intent and purposes, but it will glaze sooner, all things being equal otherwise. Modulation is easier if anything IMHO, especially with the Avids, which would be my choice hands down if it had to be cable. Have yet to have any probs with glazing FWIW, and that includes many 2000'+ Pisgah descents, with one 3200'+ drop called Heartbreak Ridge thrown in. Yes indeedy.
    Last edited by Duckman; 02-17-2004 at 06:47 PM.

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