ULTEGRA RX brings SHIMANOs pioneering chain stabilizing technology to road cycling, delivering smooth and precise shifting over technical terrain. It expands road bike capabilities, inspiring confidence on any surface and drives the evolution of road cycling to include greater elements of adventure. No longer is the road bike narrowly defined, SHIMANO ULTEGRA RX broadens the notion of drop bar riding and emboldens cyclist to explore further.

• Chain Stabilizer mechanism adopted from MTB design
• ON/OFF switch
• Compatible with current road DUAL CONTROL LEVER
• Max. front difference: 16T
• Total capacity: 39T
• Low sprocket: Max. 34T/Min. 28T
• Top sprocket: Max. 12T/Min. 11T
• Weight: 248g