With the XX1, Sram has banned the front derailleur from the bike. More and more manufacturers are now coming up with solutions to convert the existing ten-speed drivetrain to a chainring. Chainrings with the typical XX1 tooth profile are available for all possible crank types and in a wide range of sizes. They effectively prevent the chain from jumping off the chainring - even without a chain guide. In order to make progress on steep gradients despite the limited gear ratio, there are slip-on sprockets, cassette adapters or entire cassettes with an extended gear range. We have an overview of the most exciting products.
The single chainrings have a special tooth profile to prevent the chain from jumping off the chainring even without a chain guide. The teeth of the narrow-width chainrings engage precisely in the plates of the single chainrings and prevent them from coming off.
To ensure that you don't run out of gears on the mountain despite only having one chainring, there are cassette adapters that allow you to inflate your standard 11-36 cassette to 40 teeth or more. But be careful: To be able to shift the large sprockets, you need at least a rear derailleur with a medium cage. Better still with a long cage.

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