Shimano XTR FC-M9120-1 1x12 Speed Crank Arms
Who's this item for: XC and Trail riders who want the absolute best cranks Shimano offers.
Spindle Size: 24mm
Weight: 535-grams with a 32T direct mount chainring (claimed)
Chainring: This cranks will accept direct mount chainring and spiders. (chain ring sold separately)
Q-factor: 168 mm
Pros: The absolute best crankset produced by Shimano for XC and Trail use. These are a no substitute, no compromise crankset.
Cons: The cost. But if you want XTR it comes at a cost.