Shimano MTB Groupsets

Pro — XTR (M9100): Flagship with 1x/2x/3x, electronic or mechanical shifting

High — XT (M8100): High-end alternative with 1x11/1x12/2x12 options

Mid — SLX (M7100): Mid-range with 1x12 or 2x12, wide gear range

Enthusiast — Deore (M6100/M5100/M4100): Entry-level quality, 12-speed, narrower cassette range

Entry — Cues (U8000/U6000/U4000): 2023 replacement line, primarily 1x, 9–11 speed