All images on this page are used for illustrative purposes only. Actual bike specifications may vary depending on country and assembly options available. Please refer to the Features and Configurations section below for options available in your region.
Sum Pro
Shimano Dura-Ace Di2
All images on this page are used for illustrative purposes only. Actual bike specifications may vary depending on country and assembly options available. Please refer to the Features and Configurations section below for options available in your region.
Shimano Dura-Ace Di2 Components
The pinnacle of Shimano road technology and innovation, the new 12-speed R9200 DURA-ACE is the fastest, most inspired Shimano drivetrain ever. Whether you're sprinting to the finish line or crushing your local climb, get the best out of the SUM Pro.
The saddle shape, modeled on anatomical and ergonomic data, provides necessary support at strategic points, for comfortable and effective pedaling. Every single detail of Prime 3.0, including its low weight of 160g, has been designed to raise your level of performance on the SUM Pro.
Zipp’s 303 S wheelset features ideal-for-every-terrain 45mm rim depth with increased internal width to provide greater performance and ride quality in almost every measurable way.
Geometry and fit
Geometry
Fit (Stack and Reach)
Gallium CS Disc
All the engineering knowledge of our pro-level bikes, in a more accessible package. The Gallium CS will let you make your mark on those long training days, or jockeying for rank in the group.
Sum
Own the season: the Sum will get you ahead on the climbs, keep you there on the flats, and power you through the sprints.
Sum Pro
Quiver-killer? You want more than that. From the climbs to the crits, you’ll accept no compromises in aero performance, lightweight advantage, and flat-out, bunch sprint handling.
