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  1. #1
    mtbr member
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    May 2010
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    Help moving to a dual chainring setup

    Hi,
    I would like to move my Trek fuel to a dual chainring setup with a bashguard in the front. I would like to keep the stock rear cassette for now. I'm after more ground clearance and less chain bouncing/slap.

    According to the spec sheet, I have a Shimano M542 44/32/22 crankset. I would like to bump to a 24/34 or maybe 24/36 depending on availability.

    What bolt pattern do I have? Is there any other factor to purchasing rings I should be cognizant of?

    After the switch, I plan to remove a couple links of chain and move to a short or medium rear derailer. My stock derailer is a Shimano Deore XT Shadow. Recommended shorter replacements?

    I appreciate any input or advice.

  2. #2
    fresh fish in stock...... SuperModerator
    Reputation: CHUM's Avatar
    Join Date
    Aug 2004
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    8,621
    your rings are 104 mm / 64 mm - click here for spec doc

    you shouldn't really have a problem running a long cage rear derailleur....i do on my 1X9 setups.....i do remove some chainlinks though...
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  3. #3
    mtbr member
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    Chain slap become a problem with those long cages so if you don't mind that, keep your current Der.

    Chum is right about your bolt pattern.

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