![The TCX's top tube flattens out from front to rear, away from the head tube. Emily Cameron's Collegiate Club Women-winning Giant TCX cyclocross bike. 2019 USA Cycling Cyclocross National Championships bike profiles, Lakewood, WA. Photo: © A. Yee / Cyclocross Magazine](https://www.cxmagazine.com/wp-content/uploads/2020/01/2019-nationals-collegiate-club-women-img_7567-cxmagazine-ay_1-1280x853.jpg)
The TCX’s top tube flattens out from front to rear, away from the head tube. Emily Cameron’s Collegiate Club Women-winning Giant TCX cyclocross bike. 2019 USA Cycling Cyclocross National Championships bike profiles, Lakewood, WA. Photo: © A. Yee / Cyclocross Magazine