The F6B is an awesome bike for what it is, but I hesitate to call it an ST. Took the ST1300 for a spin Friday to keep all the lubricants moving to all the vitals. It is more S than T compared to the F6B. We have a criterion bicycle race that follows a figure 8 pattern around two blocks downtown here and I ride lead ahead of the racers. There are several different levels of races and the category one riders average 30 to 35 miles per hour. They can burst up to 40 so there are some sections I am running 40 plus to stay ahead of them. No problem with the ST but I tried one race with the F6B and it was just too low to the ground, scraping in many of the corners and that was with the slower riders. I will say that when it comes time for a ride I'll grab the F6B keys 20 to 1 over the ST, both are great bikes that do different things well.