Shimano XT FC-M8100-1 12S crank arms
The XT FC-M8100-1 crank arms are designed to create a perfect "pair" with the SM-CRM85 single crown. The hollow construction, a wide range of lengths and the Direct Mount system, which makes the chainring mounting easier, are offering a lighter crankset and superior functionality.
Features
- Hollow forged crank maximizes power transfer while limiting weight.
- Rigid and lightweight design for aggressive trail riding.
- Mounting bolt included.
- Direct Mount, 4 arms.
- Hollowtech II technology.
- Compatibility: 12S.
- Recommended BB_Pressfit: BB-MT800-PA.
- Recommended BB_Threaded (normal): BB-MT800.
- Threaded BB Shell Width: 68 mm, 73 mm.
- Q-factor: 172 (mm).
- Real weight: 522 g (170 mm) 513 g (175 mm).
Technology
Hollowtech Crank Arm
Hollow forged crank arms. A lightweight crankset not only reduces the bike’s weight, but decreases rotating mass to aid in acceleration. The challenge for Shimano engineers was to reduce the weight of the crank without reducing its strength and rigidity. And their advanced forging technology has solved the problem through the Hollowtech crank. Just like high quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight.