The recent change in the Specialized Roubaix now allows for fitting 40 mm wide tiresSpecifications, combines a very flexible seat post, and introduces a new Future Shock in the front for adjusting the front suspension. These changes as well as additional bottom rack attachments, top tube rack attachments and fender attachments have enhanced the all-round capability of this bike to deliver across many different terrains. All these upgrades and the bike is still light enough and there are many who continue to love this bike as an endurance bicycle.