• Patented X-Sync chainring technology provides unparalleled chain retention as part of a complete SRAM 1x system
• Integrated 4-arm, asymmetric spider maximizes stiffness to weight
• Greater frame and tire clearance than other road cranks, 2mm per side
• SRAM 1x road 10-speed and 11-speed compatible
• SRAM Model ID: FC-APX-1-A1