There is no denying the fact that modern mountain bike drivetrains are really good. Thanks to the wide range cassettes and clutched derailleurs, 1x drivetrains have become the most common set up. But they can also be quite expensive. Not to mention requiring new freehub designs to make it all work.
That’s why the new microSHIFT Advent X group might be very appealing for a number of riders. Not only does it offer high end wide range 1x performance on a budget, it doesn’t require any new standards to use.
The 10 speed Advent X cassette has an 11-48t spread and features mostly steel cogs, but with alloy used for the two largest cogs and the carrier. That makes it lighter than most of the competing cassettes with 50 or 51t cogs. More importantly, it uses the standard Shimano HG freehub body meaning that if you have an older bike, you can upgrade your drivetrain without changing anything.
Moving the chain through that cassette is the RD-M6205AM rear derailleur.