• Bidirectional narrow/wide chainrings designed for Shimano 9100/8100/7100 direct-mount crankset
• 7075-T6 CNC machined aluminum fabrication for durability
• Perfect chain line from 51 to 55 mm (depending on bottom bracket shaft length and spacer configuration)
• Compatible with Shimano 9, 10, 11, or 12-speed transmissions
