Argon 18 Sum Pro
The Argon 18 Sum Pro represents the peak of Argon 18’s performance road evolution. Engineered to match the aerodynamics of the world's fastest aero bikes while remaining significantly lighter, it is the uncompromising choice for the most demanding cyclists. With a Pro-level carbon layup and data-driven design, the Sum Pro delivers the marginal gains that decide races—whether you’re attacking on Alpe d'Huez or leading a high-speed sprint to the line.
Fast Just Got Faster.
Starting from: £2,800
Argon 18 Sum Pro
The Argon 18 Sum Pro represents the peak of Argon 18’s performance road evolution. Engineered to match the aerodynamics of the world’s fastest aero bikes while remaining significantly lighter, it is the uncompromising choice for the most demanding cyclists. With a Pro-level carbon layup and data-driven design, the Sum Pro delivers the marginal gains that decide races—whether you’re attacking on Alpe d’Huez or leading a high-speed sprint to the line.
Key Features
3D System
Get the best fit window without compromising the safety, steerer stiffness, or looks of your bike with Argon 18's 3D Technology.
Road Race Geometry
Argon 18's road race geometry is designed around the razor-sharp reflexes and precision handling required for racers of all levels.
Topological Compliance System
Proprietary design method to offer exceptional vertical compliance and dampened road-induced vibrations while retaining maximum stiffness. Each bike model featuring TCS technology was individually analysed to optimise frame topology and carbon layup.
Argon Fit System
Argon 18's fit system offers size-specific geometries to provide optimal performance and positioning for all sizes, guaranteeing no rider left behind.
Pro Level Layup
Argon 18 leave no room for compromise when they build bikes for the most demanding and passionate cyclists.
Available Colours
Titanium / Racing Red
Crystal Black / Foil
| Geometry | XXS 44-46 | XS 47-50 | S 51-53 | M 54-56 | L 57-59 | XL 60-62 |
|---|---|---|---|---|---|---|
|
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 |
|
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 |
Example Builds
Build Options
Frameset
£2,800
- Frame SUM Pro
- Fork SUM Pro Specific
- Headset FSA Headset NO.55R 1.5'' + 3D
- Integrated Cables Yes
Shimano Ultegra Di2
£5,775
- Frame SUM Pro
- Wheels DT Swiss ARC1400 Dicut Wheelset
- Tyres Challenge Criterium RS TLR 28c Black
- Tyre Clearance 30C (32mm)
- Groupset Shimano Ultegra Di2 R8150
Shimano Dura-Ace Di2
£7,700
- Frame SUM Pro
- Wheels Scope Artech A4
- Tyres Challenge Criterium RS TLR 28c Black
- Tyre Clearance 30C (32mm)
- Groupset Shimano Dura-Ace Di2 R9250
SRAM RED AXS
£8,400
- Frame SUM Pro
- Wheels Zipp 454 NSW
- Tyres Vittoria Corsa PRO 28-622 TLR, para-black G2.0
- Tyre Clearance 30C (32mm)
- Groupset SRAM Red AXS
SRAM Force AXS
£8,750
- Frame SUM Pro
- Wheels Zipp 404 Firecrest
- Tyres Vittoria Corsa PRO 28-622 TLR, para-black G2.0
- Tyre Clearance 30C (32mm)
- Groupset SRAM Force AXS E1
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