Please note that a microspline freehub is needed to fit the cassette
Shimano SLX M7100 1x12-speed Upgrade Kit:
-SLX SL-M7100-IR Rapidfire Plus shifting lever
-SLX RD-M7100-SGS Shadow RD+ rear derailleur - long
-SLX CS-M7100 cassette - 10-51 teeth
-SLX CN-7100 chain - 126 links (quick link)