Free 2-Day Shipping on Orders Over $50 100% Guaranteed Returns
Annual Tour Sale—A New Daily Deal for Every Stage

Shimano XT FC-M8000-B2 Boost Double Crankset

Sale $180.95$202.99 11% Off

Item # SHI00AY

Select options
  • Select options
  • Black, 175mm/36x26T ($180.95)
  • 100% Guaranteed Returns
  • Free 2-Day Shipping
    on orders over $50

Item # SHI00AY


Give your drivetrain a boost.

The new Shimano 11-speed XTR group borrows a heap of technology from its older sibling, Shimano's top-end XTR line, resulting in a component group that closely mirrors its more expensive kin and offers a more wallet-friendly option for riders on a budget. It now steps up to the new Boost 148 standard with the XT FC-M8000-B2 Boost Double Crankset, which keeps the gears turning with advanced Hollowtech II construction, updated bearings, and a Boost-compatible width.

While Shimano's bearings have always been solid, the M8000 gets an update with smaller bearings and improved seals for an even smoother ride that efficiently transfers power into forward motion. The Hollowtech II cold-forging process results in crank arms that are both stiffer and lighter than most solid crank arms. They've also been reshaped with an asymmetric design that's different than, yet evokes the sophistication of, XTR.

The right arm is pressed together with the hollow 24mm spindle at the factory, and the splined left crank arm is secured with perhaps Shimano's best detail: two pinch bolts to secure the arm once the bearing preload is dialed. In our experience, it's a superior design in terms of installation, trail manners, and durability. The bottom bracket is improved as well, with a lower weight, higher durability, and reduced seal drag.

The Shimano XT FC-M8000-B2 Boost Double Crankset is available with a set of 36t and 26t chainrings and several crank arm lengths to suit individual rider needs. Please note that this crankset is only compatible with Boost 148 Standard frames.

Tech Specs

Arm Material:
Arm Length:
170 mm, 175 mm, 180 mm
Chainring Sizes:
36 / 26 t
Bolt Circle Diameter:
96 / 64 mm
Compatible Components:
Shimano 11-speed, Boost 148 Standard frames
Recommended Use:
mountain bike
Manufacturer Warranty:
2 years

Reviews & Community


Write a review

    Add a:
  • Photos
  • Videos

No file chosen

Rather attach a photo from your computer?


Only jpg, jpeg, png, gif or bmp files please.

Submit ReviewCancel
Unanswered Question

What's the chainline of this crank? Sheesh. How about listing relevant info instead of irrelevant information like: "Recommended Use mountain bike".

Unanswered Question

What's the weight of the XT Boost 2x crank? In other words, why does Shimano want more money for this crank over the SLX crank?

Unanswered Question

Compatible with a 10 speed xt cassette?

Unanswered Question

Will this boost crankset work with a Jamis dragonslayer with a 52mm chainline ?

Unanswered Question

Can this Shimano XT FC-M8000 Boost Crankset be converted from a 2X set up to a 1X set up?