The new XTR M9100 series offers the most versatile group for cross-country, enduro, and marathon racing. Designed to meet the demands of high-level mountain bike racing with exceptional experience and performance. The Shimano FC-M9120-1 (Q-Factor 168mm) crankset features a completely new design that is compatible with Direct Mount Shimano chainrings ranging from 30 to 38 teeth and a double version. Details: Model: FC-M9120-1. Compatible with 11/12 speeds. Smoother power transfer even on uneven terrain. Lighter and stiffer model that is easy to replace thanks to direct mounting and a single-tool release. Q-Factor: 168 mm. Crank arms only (without chainring). Includes installation/removal tool. Chainline: 52 mm. Weight: 466g.