ShiftMounts are adapter mounts that allow you to integrate SRAM and Shimano shifters with several different brakes from Shimano, SRAM, and Magura.
SHIFTMOUNT
Shimano Deore XT M8100 review
Four Clamps Good, Two Clamps Better
Shimano I-Spec A, B ,II And EV Mounts Explained BikeRadar, 51% OFF
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Four Clamps Good, Two Clamps Better
Shimano XTR Trail disc brakes review - BikeRadar
Shimano Deore XT M8000 11-speed – first look - BikeRadar
SRAM and Shimano front-derailleur types and mounts explained
Hack for Installing a Shimano I-Spec B Shifter on an I-Spec II
Shimano I-Spec A, B ,II And EV Mounts Explained BikeRadar, 51% OFF
Box One I-Spec II R Shifter Adapter