Specialized Roubaix SL8 Expert Shimano Ultegra Di2 Anodized Silver better sealing against contamination and

better sealing against contamination and is forward and backward compatible

RD-R8000-SS

This design helps minimize air contamination and fluid loss during maintenance

the Rival eTap AXS rear derailleur will handle it

Specialized Roubaix SL8 Expert Shimano Ultegra Di2 Anodized Silver better sealing against contamination andThe Roubaix SL8, featuring the precise performance of the Shimano Ultegra Di2 electronic groupset and swift Roval C38 Carbon wheels, is the smoothest, fastest endurance road machine ever created. Its innovative Future Shock 3. 0 technology reduces impacts by a massive 53%, delivering unmatched control and speed on any road surface.