Sum

Shimano 105 Di2

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$4,750
British Racing Green
Smoked Nickel
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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 105 Di2 Components

Frameset
Frame
SUM
Fork
SUM specific
Headset
FSA Headset NO.55R 1.5'' + 3D
Integrated Cables
Yes
Wheels
Wheels
Scope S4.A
Tires
Vittoria Corsa N.EXT TLR 28mm
Tire Clearance
30C (32mm)
Group
Bottom Bracket
BB Ultegra SM-BB72
Front Derailleur
Shimano 105 Di2 R7150
Rear Derailleur
Shimano 105 Di2 R7150
Crankset Length chart
Shimano 105 FC-R7100 52/36
Chain
Shimano 105 CS-R7100 11-34
Cassette
Shimano 105 CS-R7100 11-34
Brakes
Brakes
Shimano 105 Di2 R7170
Brake Levers
Shimano 105 Di2 R7170
Rotors
Shimano SM-RT70 / F:160mm R:140mm
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

Discover the Equation

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