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  1. #1
    Senior Member hadeone's Avatar
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    Difference between Tektro R350 and 510A brake calipers?

    Both the R350 and 510A calipers come stock on most entry level bikes.

    Does anyone know the differences between these two calipers, if any?

    Thanks.

  2. #2
    Blaster of Reality Scrodzilla's Avatar
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    I'm fairly certain the 510A is just the OEM version of the R350. Not sure why they'd bother with two different model numbers.

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    Veteran Racer TejanoTrackie's Avatar
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    R350 are short reach with recessed nut and 510A are long reach with external nut.
    What, Me Worry? - Alfred E. Neuman

    Quote Originally Posted by Dcv View Post
    I'd like to think i have as much money as brains.

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    Blaster of Reality Scrodzilla's Avatar
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    Not according to this and various other sources. I have one of each in my parts bin and they're the same.

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    Veteran Racer TejanoTrackie's Avatar
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    Quote Originally Posted by Scrodzilla View Post
    Not according to this and various other sources. I have one of each in my parts bin and they're the same.
    Strange, because the 300 series is short reach and the 500 series is medium to long reach. For example the Kilo TT Pro comes with a R350 and the Kilo WT comes with a R556. As to the 510A suffix, see this as an example >>> http://www.velosolo.co.uk/tektro510.html Clearly external hex nut and longer reach.
    Last edited by TejanoTrackie; 11-28-11 at 08:22 AM. Reason: spelling and grammar
    What, Me Worry? - Alfred E. Neuman

    Quote Originally Posted by Dcv View Post
    I'd like to think i have as much money as brains.

  6. #6
    Senior Member hadeone's Avatar
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    Thanks for the responses.

    I'm trying to get the "Tektro: Economy Road Brake Set" from bikeisland.com for a friends build but want to make sure they are comparable to what I have on my bike.

    I'll have to see if what they are selling is recessed or external nut. I had the 510A on my old Windsor Clockwork and it was recessed.

    Thanks again!

  7. #7
    Blaster of Reality Scrodzilla's Avatar
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    I looked into this a little more and TT is correct. Tektro's 300 series should all have a 39-49mm (short) reach, while the 500 series should all be 47-57mm. The one I have came from BikeIsland's "economy" brake set and is definitely short reach witha recessed nut, so I'm sure they don't even know what they're selling (which doesn't really surprise me).

    We've also got a 539 front caliper sitting around and it's definitely medium reach.

  8. #8
    Senior Member hadeone's Avatar
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    Quote Originally Posted by Scrodzilla View Post
    I looked into this a little more and TT is correct. Tektro's 300 series should all have a 39-49mm (short) reach, while the 500 series should all be 47-57mm. The one I have came from BikeIsland's "economy" brake set and is definitely short reach witha recessed nut, so I'm sure they don't even know what they're selling (which doesn't really surprise me).

    We've also got a 539 front caliper sitting around and it's definitely medium reach.
    Ok that's what I needed to know. Seems like what they refer to at 510A is something else.

    Thanks for your help.

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