
The SRAM X1 GXP 11 Speed Chainset Inc. Bottom Bracket uses SRAM X-SYNC Chainrings which provide the highest level of performance & durability. Designed in Germany, X-SYNC rings are an integral part of the SRAM 1X drivetrain. Built for total chain control, each tooth's thickness is CNC-machined to fit better into the chain's inner & outer links. Available in a 32 chainring, the X-SYNC the chainring provides the highest level of performance & durability. The SRAM X-SYNC tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp & narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain.