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where can find online a chainring with fittings like this?

enter image description here

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    That looks very much like a riveted together rings and spider The individual rings cannot be removed of changed. Does not look worn, what's the reason for wanting to replace it?
    – Argenti Apparatus
    Feb 20, 2019 at 19:18
  • The two missing splines look uncommon. Does the crank lack corresponding notches?
    – ojs
    Feb 20, 2019 at 20:19
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    I want to change to 1X10. it came off Truvativ x-flow crank.
    – Omer
    Feb 21, 2019 at 19:32

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I believe the central spline pattern is proprietary to the X-Flow crank. Basically you will not be able to get a single aftermarket chainring to fit.

If you want to go 1x10, you cheapest option is to get a used 3x crank that fits your bottom bracket bearing, ditch the rings and install a narrow-wide ring in the middle position.

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  • If the BB axle spline pattern is ISIS like I guess it is, I would personally advise to ditch the cranks and the BB too. The options will be much less limited.
    – Gabriel
    Feb 22, 2019 at 14:59

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