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XTR FC-M9120-1 Crankarms - Boost
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Why We Like The XTR FC-M9120-1 Crankarms
Shimano craftsmanship reaches new heights with the XTR 12-speed groupset. These Hollowtech II crank arms feature a lighter and stiffer design, and simple-to-change direct-mount chainrings with a single key release, allowing you to feel things out with your new 12-speed configuration and find the perfect gear ratio for you.
If you're a little confused by Shimano's offerings of both the FC-M9120 and FC-M9100, you're not alone. With two offerings in this top-tier package, the differences may be difficult to spot at first glance. Shimano builds the M9120 with a beefier, more robust design than the XC-oriented 9100, ideal for riders charging hard and having up-close-and-personal encounters with rowdy sections of trail that give your crankarm the occasional bash. On top of the beefier construction, the M9120 crankarms boast a wider Q-factor that lands in at 168mm, in comparison to the 158mm of the 9100. This wider Q-factor increases stability when you're descending at high speeds and offers a bit more chainstay clearance for beefier 148-millimeter Boost spacing in the back.
As its name suggests, this particular XTR M9120 Crankset is intended solely for bikes with Boost 148-millimeter rear axles, with its 52-millimeter chainline reflecting the outboard move to accommodate Boost axle spacing. The crank arms come alone, without chainrings, but can be paired up with either one-by or two-by options in a huge range of sizes to best suit your riding needs. Additionally, Shimano is offering the XTR 9120 in a range of sizes from 165mm to 175mm, so shorter riders, or those with gravity-oriented appetites who want a little more clearance, can be decked out with the perfect crank length, too.
Details
- Aggressive trail cranks for conquering the mountain
- XTR level technology keeps things light, stiff, reliable
- HollowTech II cold-forged cranks are lightweight, stiff, strong
- 168mm Q-factor adds stability on the trail and chainstay clearance
- 52mm chainline optimized for 148mm Boost rear axle spacing
- Easy to change chainring with a simple direct-mount application
- Cranks can be set up as either 1x or 2x to suit your needs
- Item #SHI00L3
- Arm Material
- cold-forged alloy
- Arm Length
- 165mm, 170mm, 175mm
- Bolt Circle Diameter
- direct-mount
- Rings
- 1x, 2x
- BB Type
- [pressfit] BB94-41A, [threaded] SM-BB-93
- Spindle
- 24mm
- Q Factor
- 168mm
- Chainline
- 52mm
- Compatible Components
- Shimano XTR 12-speed
- Claimed Weight
- [170mm] 1lb 1oz (480g)
- Activity
- trail, enduro
- Manufacturer Warranty
- 3 years
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Shimano XTR M9120 crankarms reviewBest lightweight crankarms for mountain bikingDurable crankset for aggressive trail riding12-speed compatible Shimano crankarmsHollowtech II technology for enhanced performanceWider Q-factor crankarms for better stabilityDirect-mount chainring options for XTR M9120Customizable crank lengths for all ridersBoost spacing crankset for modern mountain bikesShimano XTR M9120 specifications and featuresUpgrade your bike with XTR 12-speed crankarmsComparison of Shimano XTR M9120 and M9100 cranksetsLearn more about XTR FC-M9120-1 Crankarms - Boost
