For the aggressive trail and enduro rider charging through rough terrain like its nothing (even when it’s not), the newly constructed XTR FC-M9120-B2 Boost Crankset is the ideal option for a more robust and durable crankset construction. The M9120 is slightly beefier than Shimano’s alternative FC-M9100 crankset, and its lightweight and stiff qualities only add to the benefits of this component. Shimano designed this crankset, which uses direct-mount chainrings with a single release key for easy customization, to be paired with their XTR 12-speed drivetrain. The M9120 features a wider q-factor, which increases stability descending at high speeds for a start, at 168mm. This also offers a bit more chainstay clearance for the more rugged chainstays found more frequently on modern, all-mountain and enduro rides. The M9120 features faster acceleration from a new drive system and smoother driving over bumpy terrain thanks to special gear teeth profile design that’s specifically designed for all-mountain riding. This component is for the rider who encounters those turbulent trail sections that might take a dig at your crankarm if you’re not careful.
Arm Length: 165mm, 170mm, 175mm;
Chainring Sizes: 38-28t;
BB Type: [recommended BB threaded] SM-BB93, [recommended BB pressfit] SM-BB94-41A;
Q Factor: 168mm;
Chainline: 51.8mm;
Includes: 1 BB socket tool;
Claimed Weight: 592g;
storecredits: 0.0;
Style Variants
Available Colors: Stealth Gray
Size Reference for SHIMANO Crankset - Boost
Available Sizes: 175mm, 38/28t
