Elegant and secure direct-mount X-SYNC chainrings from the company that originated the 1x drivetrain for the ultimate in consistent chain control over the long haul.

Features:

• Direct mount chainrings in 38T through 46T
• DUB bottom bracket adds durability and simplicity
• Wide chainline crankset to fit the biggest gravel tires
• Longer DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brands
• Compatible with 135, 142 and BOOST rear spacing

Model ID: FC-RIV-1W-D1