We use cookies to improve your experience on our website and to show you personalised content.
You can read our Cookie and Privacy policy or manage them individually.
You can read our Cookie and Privacy policy or manage them individually.
Description
The Argon 18 SUM Pro Road Frameset offers an unparalleled advantage on climbs and sprints, daring you to decide just how much mercy to show your competition.
With a rider-centred design, the frame strikes the perfect balance between responsiveness and stability, delivering a ride quality that exceeds most aero frames. The Sum’s precision-engineered layup optimises aerodynamics while minimising weight. Its advanced aero-profile tube shapes remove unnecessary material, ensuring maximum power transfer for ultimate efficiency.
3D System
Argon 18's 3D Technology provides a customised fit without compromising safety, steerer stiffness, or aesthetics.
Road Race Geometry
Engineered for razor-sharp reflexes and precise handling, this geometry meets the demands of racers at every level.
Topological Compliance System
Using a proprietary design process, this system offers exceptional vertical compliance and reduces road vibrations while retaining maximum stiffness. Each TCS-equipped bike undergoes detailed analysis to optimise frame topology and carbon layup.
Argon Fit System
With size-specific geometries, Argon 18 ensures every rider achieves optimal performance and positioning, leaving no cyclist behind.
Elite Level Layup
Crafted with the same rigorous standards as Pro-level models, Argon 18’s Elite-level bikes deliver uncompromising performance for discerning riders.
Frame | SUM Pro |
Fork | SUM Pro specific |
Headset | FSA Headset NO.55R 1.5'' + 3D |
Integrated Cables | Yes |
Size Guide
Delivery & Returns
Reviews
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Q&A
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Oh, dear. You tried too many passwords and now your account has been locked for the next 30 minutes.
Not sure of your password? Reset using the link below.
We've sent you an email to reset your password.
To create your new password, click the link in the email and enter a new one. Didn't receive the email? Check your junk email.
Please enter your registered email address below and we'll send you an email explaining the next step.
Select a store
Select the store you visit most frequently below and their stock information will show on product pages.
Important Update for Our US Customers
We regret to inform you that due to ongoing challenges related to current US tariffs, shopping on Sigma Sports is temporarily unavailable for customers based in the United States.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our US community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team