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  1. #1
    Junior Member
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    Changing a chainring

    Right now I have a Truvativ Blaze 32T single speed chain ring and I would like to replace it with a Raceface 38T 104mm single ring. Would this be possible because of the difference in name brands or do I need to buy a Raceface crankset to do this? Thanks for any help.

  2. #2
    Senior Member
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    If the bolt circle diameters and number of bolts are the same, the chainrings should substitute with no problems.

  3. #3
    Happy go lucky trevor_ash's Avatar
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    There are a small handful of things to worry about concerning chainrings. I know nothing of Raceface or Truvativ blaze but guessing HillRider must already know they're compatible.

    1. The BCD (bolt circle diameter).
    2. The width (1/8", 3/32")
    3. Whether it has pins and ramps for shifting or not (SS rings won't).

    I think that's about it?

  4. #4
    Senior Member Monster Pete's Avatar
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    I don't think it's very likely, but if there's any 'dish' to the chainring, the replacement should match it in order to preserve the chainline.
    I've got a bike, you can ride if you like it's got a basket, a bell that rings and things to make it look good- Pink Floyd, 1967

  5. #5
    Senior Member
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    You'll also need a longer chain.

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