Sum

Shimano Ultegra Di2

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$6,000
Smoked Nickel
British Racing Green
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Components and Geometry

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

Frameset
Frame
SUM
Fork
SUM specific
Headset
FSA Headset NO.55R 1.5'' + 3D
Integrated Cables
Yes
Wheels
Wheels
Scope R4
Tires
Vittoria Corsa N.EXT TLR 28mm
Tire Clearance
30C (32mm)
Group
Bottom Bracket
BB Ultegra SM-BB72
Front Derailleur
Shimano Ultegra Di2 R8150
Rear Derailleur
Shimano Ultegra Di2 R8150
Crankset Length chart
Shimano Ultegra R8100 52/36
Chain
Shimano Ultegra CN-M8100 12S
Cassette
Shimano Ultegra CS-R8100 11-30
Brakes
Brakes
Shimano Ultegra Di2 R8170
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 SMR-II
Bar Tape
Ciclovation LEATHER TOUCH Tornado Gloss
Saddle
Repente Quasar
Seatpost
SUM specific

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

Equation

Summer starts here: Maximum value to max out those long days

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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.

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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.

Discover the Sum Pro