SUM Ultegra Di2 Size:M • Lightweight with a teardrop

• Lightweight with a teardrop shape

Rear Derailleur Carbon Inner Cage Red XPLR AXS E1 Including Aluminum Screws

Instep and midfoot are separately adjustable for a fully customized fit

The GX Eagle Transmission derailleur is a lesser version of nothing

sports scientists and global experts in hydrodynamics

SUM Ultegra Di2 Size:M • Lightweight with a teardropDecisions, decisions made easy. With a bike that gives you flat out advantage on the climbs, the sprints and the straightaways, the only decision youll need to make is how nice you want to be to the other guys. A rider oriented design approach ensures a frame that is both rooted and responsive, with a ride experience most aero frames cant match. With a layup engineered to maximize aerodynamics while keeping weight low, the design process for the Sum