Shimano XT FC-M8120-1 Crank Arm Set

$69⁹⁹ $153⁹⁹

RA price match promise
Pay later with

,

and

Color

Black

Crank Length

165mm 170mm 175mm

In Stock Ships Immediately

Shimano | SKU: IFCM81201EXXT | Option: Black, 175mm

Pickup available at RA Cycles - Brooklyn

Usually ready in 24 hours

Questions about this product?

* Product image may vary. Refer to the description for accurate details.

Shimano XT FC-M8120-1 Crank Arm Set Info

The Shimano XT FC-M8120-1 Crank Arm Set sits in the XT lineup where serious trail performance meets everyday rideability — cold-forged aluminum arms built around Hollowtech II construction for a stiffness-to-weight ratio that holds up under hard efforts on technical terrain. The narrow 178mm Q-factor keeps your pedaling stance compact, which translates directly into cleaner power transfer and less fatigue on longer rides.

Chainrings are sold separately, and the direct mount interface gives you the flexibility to run either a 1x or 2x setup without changing the crank. These arms are built for Boost spacing, which positions the chainline correctly for modern 148mm rear hubs — a detail that matters if you're running or upgrading to a Boost-spaced drivetrain. Three arm lengths are available — 165mm, 170mm, and 175mm — to match your fit requirements.