Shimano XTR FC-M9120-1 Crank Set 11/12-speed

FC-M9120-1 Crankset
It’s lighter. It’s stiffer. It’s smoother. What else would you expect from next gen XTR? Optimal power transfer for maximum speed? Boost? Splined interface chainring? Don’t worry, you get it all! For the 1x version of the new XTR crank, Shimano is using a direct mount construction for the first time. This and the integrated extractor simplify the chainring's replacement and permit a lighter and stiffer design. Thanks to a widened q-factor of 168 mm, the FC-M9120-1 offers plenty of heel clearance for frames with 148 mm rear spacing.

Hollowtech II
The concept of Hollowtech II technology is focused on producing a superior crankset which will maximize a rider’s power transfer. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. Hollowtech technology is an ultra-lightweight hollow crankarm created by Shimano with the company’s own proprietary forging technology that also maintains rigidity. The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance.

Shimano XTR M9100
Built on 27 years of MTB innovations, the new XTR targets the highest demanding XC, Enduro and Marathon riders. Looking to push boundaries, even on those insanely demanding courses nowadays?  The new XTR is jam-packed with every advantage you’ll need to get the job done. Heck, it’ll even inspire you to turn yourself inside out while doing it. Shimano's engineers have been working very hard the last 27 years, since they came out with the first ever MTB groupset. The new XTR is solid proof of this. Redesigned from the bottom up, it is by far the most advanced MTB groupset on the market. It’s lighter, smoother, more durable and versatile. It’s also extremely efficient in transferring all pedal-pounding watts into ground speed.