The answer to this question depends on the specific bike models being compared. Generally speaking, a Tron bike is designed for speed and performance, while a TT (time trial) bike is built with aerodynamics in mind. In terms of pure speed, a Tron bike will typically be faster than a TT bike due to its lighter weight and stiffer frame. However, the difference between the two bikes may not be as pronounced when considering wind resistance and other factors that affect overall performance. Ultimately, it comes down to personal preference and which type of riding you prefer - racing or leisurely cycling.