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
$9,000 USD
Crystal Black / Foil
Titanium / Racing Red
Find your size
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
Shimano Dura-Ace Di2 R9250
The DURA-ACE RD-R9250 12 speed Di2 electronic rear derailleur integrates the system charging port and wireless connectivity while delivering super fast, precise shifting.
Vision Metron 5D ACR EVO
The 5D EVO improves control, stiffness, and vibration absorption, enhances aerodynamics with a 1.5 cm lower stack, and weighs just 320 g for maximum efficiency.
Scope Artech 4
With a rim profile of 45 mm and a set weight of only 1120 grams, the Artech 4 combines ultra low weight with superb aerodynamics and cross-wind stability.
Challenge Criterium RS TLR 28c Black
The Criterium RS improves speed, grip and rolling resistance while providing legendary control and supple ride thanks to its handmade construction.
Frameset
Frame
SUM Pro
Fork
SUM Pro specific
Headset
FSA Headset NO.55R 1.5'' + 3D
Integrated Cables
Yes
Wheels
Wheels
Scope Artech A4
Tires
Challenge Criterium RS TLR 28c Black
Tire Clearance
30C (32mm)
Group
Bottom Bracket
CeramicSpeed BB86 Shimano Coated
Front Derailleur
Shimano Dura-Ace Di2 R9250
Rear Derailleur
Shimano Dura-Ace Di2 R9250
Crankset
Length chart
Shimano Dura-Ace R9200 52/36
Chain
Shimano Dura-Ace CN-M9100
Cassette
Shimano Dura Ace CS-R9200 11-30
Brakes
Brakes
Shimano Dura-Ace Di2 R9270
Brake Levers
Shimano Dura-Ace Di2 R9270
Rotors
Shimano Dura-Ace RT-MT900 / F:160mm R:140mm
Shifters
Shimano Dura-Ace Di2 R9270
Other Components
Handlebar
Width chart
Vision Metron 5D ACR EVO
Bar Tape
Ciclovation LEATHER TOUCH Tornado Gloss
Saddle
Repente Quasar CR Carbon Rail
Seatpost
SUM specific (included with frameset)
Geometry and fit
Geometry
XXS44-46
XS47-50
S51-53
M54-56
L57-59
XL60-62
A
Seat tube Height
cm
39.5
42.5
46.0
50.5
55.0
59.5
B
Seat tube angle
deg
75.0
74.5
74.0
73.5
73.0
72.5
C
Head Tube Angle
deg
71.2
72.1
72.7
72.7
72.7
73.0
D
Top tube length
cm
50.3
52.0
53.8
55.7
57.8
60.0
E
Chain stay length
cm
41.0
41.0
41.0
41.0
41.0
41.0
F
Wheelbase
cm
96.7
97.2
97.5
99.0
100.6
102.0
G
BB Drop
cm
6.9
7.3
7.7
7.7
7.7
7.7
H1
Head Tube Length 3D (0mm)
cm
6.9
8.5
10.1
12.6
15.2
18.0
H2
Head Tube Length 3D (15mm)
cm
8.4
10.0
11.6
14.1
16.7
19.5
H3
Head Tube Length 3D (25mm)
cm
9.4
11.0
12.6
15.1
17.7
20.5
I
Stand Over Height
cm
67.6
70.0
72.7
76.6
80.4
84.1
Fit (Stack and Reach)
XXS44-46
XS47-50
S51-53
M54-56
L57-59
XL60-62
J
Stack 3D (0mm)
cm
47.1
49.3
51.6
54.0
56.5
59.2
J
Stack 3D (15mm)
cm
48.5
50.7
53.0
55.4
57.9
60.6
J
Stack 3D (25mm)
cm
49.5
51.7
54.0
56.4
58.9
61.6
K
Reach 3D (0mm)
cm
37.5
38.2
38.9
39.7
40.5
41.4
K
Reach 3D (15mm)
cm
37.0
37.7
38.5
39.3
40.1
41.0
K
Reach 3D (25mm)
cm
36.7
37.4
38.2
39.0
39.8
40.7
Saddle Height Min
cm
56.5
59.5
63.0
67.5
72.0
76.5
Saddle Height Max
cm
71.5
74.5
78.0
82.5
87.0
91.5
Other Configurations
SRAM RED AXS
$9,750 USD
SRAM Force AXS
$6,750 USD
Shimano Ultegra Di2
$6,375 USD
Frameset
$3,300 USD
Nitrogen
You can have it all
Nitrogen Pro
You can have it all
Equation
Summer starts here: Maximum value to max out those long days
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.
