This columbus steel frame was developed in close partnership with the cult racer bike messenger and adventurer chas christiansen chas travels extensively as well as racing alleycats criteriums and cyclocross events chas set cinelli the challenge to create a frame that could service all of these diverse needs so the mash work was bornthe frame has a distinct raw appearance adding a dark smoke topcoat has preserved the weld heat markings on the steel this treatment celebrates columbus tubi