Vitus bikes zenium disc road bike tiagradisc brakes are becoming an ever more popular choice with road and sportive riders thanks to the improved all weather braking performance with the added benefit of increased tyre clearance making it possible to run up to a 30c tyre this adds even greater appeal to anyone wishing to mix it up between gravel and roadthe zenium disc features a lightweight alloy frame with a full carbon fork shimano tiagra 10 speed groupset fulcrum racing sport disc whee