Purchased a set of Shimano XTR FC-M9125-1 cranks to match the SLX FC-M7120-1 Q-Factor that was coming off (178mm). However these ended up being a little too wide for my linking, so I replaced them with FC-M9120-1 arms. My loss can be your gain. Installed once, and ridden twice, includes all necessary spaces and chainring lock nut. No chainring or BB included. Specs from Shimano website:

• Supports aggressive riding and improved maneuverability
• For 148 mm O.L.D. and 55 mm chain line
• Direct mount chainring
• 174 mm Q-Factor

Pics

Will ship in the box from my new FC-9120 arms. Asking $325 (shipping included), I accept PayPal (friends and family), Venmo, or Zelle. Message me if interested.