Are e*thirteen cassettes compatible with Gravel/Road drivetrains? Which ones?

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  • Scot Hastings

    I used the Ratio kit to get the Helix 12 goodness on my gravel bike, which originally had a standard Apex 1x11 (420%) drivetrain.  The conversion took a couple hours but the materials from Ratio are outstanding and the result can't be beat.

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