Shimano XT FC-M8120 1x12 Speed Crank Arms - 24mm - Shimano Direct Mount - No Spider - No Chainring - 55mm Chainline - Black - 170mm - 68-73mm Dangerous Goods They succeeded in this by

They succeeded in this by using a tough as nails Nylon Composite body

This not only aids with comfort and power generation but it also reduces the chances for impact and bruising on your thighs

high-impact resistance

Dimensions / weight: The 160mm model is 1

The M7100 12 speed rear derailleur offers fast and precise shifts on any trail

Shimano XT FC-M8120 1x12 Speed Crank Arms - 24mm - Shimano Direct Mount - No Spider - No Chainring - 55mm Chainline - Black - 170mm - 68-73mm Dangerous Goods They succeeded in this byThe Shimano XT M8120 series cranks are built to handle everything you can throw at them. By utilising Hollowtech II technology Shimano is able to keep the weight down, while still creating a rigid crank arm capable of handling some seriously aggressive trail riding. The M8120 cranks are compatible with Boost frames only. Check out the M8100 cranks for the non Boost compatible version. Who's this item for: Designed for aggressive trail riding, but