Say "hello" to hollow.
The stiffest, strongest, and lightest crankset on the market is what SRAM says you can expect from the Eagle XX1 crankset. Its hollow-carbon architecture has been re-engineered using Carbon Tuned° technology to make it ultra-stiff in high-stress areas and as light as possible where reinforcement isn't necessary. Combined with the improved X-Sync™ 2 direct-mount chainring, which offers quieter operation and improved mud-shedding, the Eagle XX1 crankset is the ultimate choice for cross-country riders driving SRAM's 12-speed Eagle groupsets.
Compatible with BB30 bottom brackets (not included). Includes 32T direct-mount 12-speed chainring.