700c, 27-Inch & 650c

From road to gravel, the ULTEGRA RS770 supports wider tires for mixed surface and rough tarmac riding. The tubeless carbon laminate rims are complimented by CENTER LOCK disc brake hubs, providing confident braking in all conditions. Efficient acceleration - High drive rigidity - OPTBAL Lightweight and durable - Carbon laminate rim - Road tubeless Stability - Higher rigidity - Road E-THRU axle Easy maintenance and installation - Simple handling and workability - CENTER LOCK mount