SRAM's new Force 22 BB30 Crankset features unidirectional carbon in the crank arms matched to a forged alloy spider to deliver the ultimate power and precision in your drivetrain. The Force 22 BB30's new carbon arms use less material without sacrificing stiffness, and the hidden bolt pattern allows SRAM to take full advantage of the carbon fiber to further improve stiffness and save weight. SRAM keeps the 130mm bolt circle diameter standard to ensure compatibility with aftermarket chainrings, but with the mounting bolt now integrated within the carbon structure, SRAM enhances the accuracy and speed of front shifts. The Force 22 also features stiffer X GlideR chainrings, which are machined from 5mm thick 7075 T6 aluminum and have been carefully tuned to the 11 speed drivetrain. The chainrings have advanced shift timing pins and ramps that are designed to offer flawless shifting performance with the Yaw Front Derailleur.