Sum

Shimano Ultegra Di2

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$5,000
Race Day Red Gloss
Podium Grey Gloss
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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 Ultegra Di2 Components

Shimano Ultegra Di2 R8150

With lightning-fast, accurate, and reliable shifting performance, Ultegra Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike.

ACR System

Aerodynamic Cable Routing (ACR) stem system provides full cable integration for a clean look and better aero performance.

Frame
Frame
SUM
Fork
SUM specific
Headset
FSA ACR NO.55R 1.5''
Integrated Cables
Yes
Integrated Tools
No
Wheels
Wheels
Vision Team 30 Clincher Centerlock XDR wheelset
Tires
Vittoria Rubino Pro TLR G2.0 700x28c
Group
Bottom Bracket
Shimano SM-BB72
Front Derailleur
Shimano Ultegra Di2 R8150
Rear Derailleur
Shimano Ultegra Di2 R8150
Crankset Length chart
Shimano Ultegra R8170
Chain
Shimano Ultegra CN-M8100 12S
Brakes
Brakes
Shimano Ultegra Di2 R8150
Brake Levers
Shimano Ultegra Di2 R8150
Rotors
Shimano Ultegra RT-CL800 / F:160mm R:140mm
Shifters
Shimano Ultegra Di2 R8170
Other Components
Handlebar Width chart
FSA Energy SCR Compact
Stem Length chart
FSA ACR ST-OS-160
Bar Tape
Ciclovation LEATHER TOUCH Tornado Gloss
Saddle
Repente Quasar
Seatpost
SUM specific
Included with bike
Toolkit
No

Geometry and fit

Geometry

XXS44-46
XS47-50
S51-53
M54-56
L57-59
XL60-62
A
Seat tube Height
cm
39.5
B
Seat tube angle
deg
75.0
C
Head Tube Angle
deg
71.2
D
Top tube length
cm
50.3
E
Chain stay length
cm
41.0
F
Wheelbase
cm
96.7
G
BB Drop
cm
6.9
H1
Head Tube Length 3D (0mm)
cm
6.9
H2
Head Tube Length 3D (15mm)
cm
8.4
H3
Head Tube Length 3D (25mm)
cm
9.4
I
Stand Over Height
cm
67.6

Fit (Stack and Reach)

XXS44-46
XS47-50
S51-53
M54-56
L57-59
XL60-62
J
Stack 3D (0mm)
cm
47.1
J
Stack 3D (15mm)
cm
48.5
J
Stack 3D (25mm)
cm
49.5
K
Reach 3D (0mm)
cm
37.5
K
Reach 3D (15mm)
cm
37.0
K
Reach 3D (25mm)
cm
36.7
Saddle Height Min
cm
56.5
Saddle Height Max
cm
71.5

Other Configurations

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.