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  1. #1
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    XTR Brake Bolt - Mush?

    Searched against this, but no matches, so wondering if unique to me. I've had to adjust my rear XTR brake caliper position frequently as I switch wheelsets (going from 142 to 142+ and back). One of the bolt hex heads is now near-stripped, and from the beginning it seemed to me that the bolt heads weren't overly deep. Anyone else come across this?

  2. #2
    wyrd bi ful rd
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    I think they are M6 bolts.

    Do they look like these ...
    XTR Brake Bolt - Mush?-20130518-shimano-xtr-caliper-mounting-bolt-forum.jpg

    Could get something like these which are deeper.
    XTR Brake Bolt - Mush?-20130518-m6-16-bolt-forum.jpg

  3. #3
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    XTR Brake Bolt - Mush?

    Another thought could be that your Allen wrench end could be getting worn out & not fitting as tight as it use to. all you need to do is cut the tip off to get a nice tight fit again. But yeah at this point I'm sure you need another bolt.


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  4. #4
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    Thx for the replies, but I probably didn't explain myself too well.

    I realize I can strip a bolt head by being careless, or if my Allen tool is rounded (my bit is fairly new, and in good shape), but this one bolt seemed particularly soft.

    Was trying to sort out if this was a known issue with Shimano, and figure out I'd I should just switch all the bolts now. Looks like it isn't. I might just have a bad bolt, or may have been careless.

    Cheers.

  5. #5
    i ride bikez!!11!
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    I had the same problem. I also switch wheels all the time and eventually rounded out the bolts that came with my XTR brakes. I switched to the 5mm bolts that come with XT brakes which are deeper and use a 5mm instead of a 4mm.

  6. #6
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    Rotor shims. Use them to space the rotors on the hub so that you don't have to adjust the caliper position every time you change wheelsets.

    Syntace Disc Rotor Shims > Components > Brakes > Brake Parts and Service Kits | Jenson USA Online Bike Shop

  7. #7
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    ..

    Quote Originally Posted by aerius View Post
    Rotor shims. Use them to space the rotors on the hub so that you don't have to adjust the caliper position every time you change wheelsets.

    Syntace Disc Rotor Shims > Components > Brakes > Brake Parts and Service Kits | Jenson USA Online Bike Shop
    Yep, have some on the way. Saves a lot of time and headache.

  8. #8
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    Huh, I had always wondered the point of rotor shims - makes sense for people with multiple wheelsets!

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