2016 Salsa BearGrease Rear Brake Adapter- Mtbr.com
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  1. #1
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    2016 Salsa BearGrease Rear Brake Adapter

    I'm trying to upgrade my rear brakes to a 160mm Shimano XTR brake. Bike is carbon and original rotor is 140mm

    Which adapter do I need? I'd love a link - noobie!
    Last edited by Whec716; 09-23-2016 at 07:23 AM.

  2. #2
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    Quote Originally Posted by Whec716 View Post
    I'm trying to upgrade my rear brakes to a 160mm Shimano XTR brake.

    Which adapter do I need? I'd love a link - noobie!
    You will need this kit to go 160mm in the rear.

    Avid Disc Brake Adapter Post to Post +20mm
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  3. #3
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    Doesn't it already have 160 with the caliper mounted straight to the post mounts?
    I like turtles

  4. #4
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    Quote Originally Posted by majack View Post
    You will need this kit to go 160mm in the rear.

    Avid Disc Brake Adapter Post to Post +20mm
    Wrong.....the bike is ready to roll 160 discs

  5. #5
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    I believe the Beargrease has a 140mm rear rotor out of the box.

  6. #6
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    Assuming the bike is carbon...? The carbon and aluminum frames hold the rear brake differently.

  7. #7
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    Carbon original rotor is 140mm

  8. #8
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    Quote Originally Posted by the mayor View Post
    Wrong.....the bike is ready to roll 160 discs
    The Beargrease comes with 140mm rotor stock. So, yes the part I gave the OP is what he needs. It is what I use in the shop for the Beargrease.
    RICOH for LIFE
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  9. #9
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    I would highly recommend using the shimano brake adapter. you just need two of the same one (the front 160-180 post to post is the same as a back 140-160 post to post).

    A lot of people will say that you can get by with the avid, and you can, but there are differences in how the brake caliper aligns with the rotor and allows proper contact of the full brake pad.

    Will your brakes function with avid mounts on shimano brakes? Yes. But is there a difference you see and measure? Yes.

    Generally speaking, brakes are designed as a complete system and you will have the best performance and longevity staying in brand for all of the pieces - brake, rotor, mounts, and fluids.

  10. #10
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    Quote Originally Posted by GiantTurd View Post
    No it is not, he needs a Shimano adapter. why would you use an Avid for a Shimano brake?

    https://www.biketiresdirect.com/prod...FdZbhgodrS8Azg
    The Avid systems works. And I do agree to try and stay with the same group of parts but this is what I have been using and it works.
    RICOH for LIFE
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  11. #11
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    @majack - as I mentioned, the f160-180 p-p is the same as the rear 140-160. If you doubt me, call shimano inside tech support and they can confirm for you.

    As to your comment that the avid will work... it will. But if you slow down and look at it when you install it you will see that the ears of the brake caliper do not sit flush on the avid stand offs (or one piece adapter as well). They will compress as you tighten things down, and if you never looked as you snugged it up, you would miss it and think it is no big deal.

    Not to mention that Avids were designed to us CPS and shimano were not...

    But that little angle mis-match will preload the caliper when tightened and can be the source of premature wear/failure of the caliper body, vibration that creates noise, and a host of other potential problems. Not to mention the fact that brake pad doesn't align with the rotor correctly.

    I used to have a pic of the gap, but cannot find it...

  12. #12
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    Quote Originally Posted by gregclimbs View Post
    @majack - as I mentioned, the f160-180 p-p is the same as the rear 140-160. If you doubt me, call shimano inside tech support and they can confirm for you.

    As to your comment that the avid will work... it will. But if you slow down and look at it when you install it you will see that the ears of the brake caliper do not sit flush on the avid stand offs (or one piece adapter as well). They will compress as you tighten things down, and if you never looked as you snugged it up, you would miss it and think it is no big deal.

    Not to mention that Avids were designed to us CPS and shimano were not...

    But that little angle mis-match will preload the caliper when tightened and can be the source of premature wear/failure of the caliper body, vibration that creates noise, and a host of other potential problems. Not to mention the fact that brake pad doesn't align with the rotor correctly.

    I used to have a pic of the gap, but cannot find it...
    I don't doubt you. To each his own I guess. I'll stay out of this then and you all can have a great day.
    RICOH for LIFE
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  13. #13
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    Can anyone confirm if the stock fork needs the mount kit to allow a 160 mm rotor?
    Thanks

  14. #14
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    Quote Originally Posted by wgerow View Post
    Can anyone confirm if the stock fork needs the mount kit to allow a 160 mm rotor?
    Thanks
    No adapter needed

  15. #15
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    Quote Originally Posted by 2LO4U2C View Post
    No adapter needed
    Cool, thanks
    I'll just get one for rear

  16. #16
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    hello people, im looking into upgrading my bear grease to 203 in the front and and 180 in the rear.
    still running the Sram Guide RS on my carbon BG.
    Link would be much appreciated
    best regards

  17. #17
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    max rear disc size?

    Does anyone know whether there is sufficient space to accommodate a brake disc caliper and required adaptor for a 180mm rotor between the rear stays of the new carbon frames?

    (yes, I can call Salsa tomorrow)

  18. #18
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    Quote Originally Posted by ReneSalem View Post
    hello people, im looking into upgrading my bear grease to 203 in the front and and 180 in the rear...
    Just spoke with Salsa. They say 160mm is the max rotor size that can be accommodated in the carbon rear stays.

    If anyone has evidence to the contrary (mounted a 180mm) please let us know.

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