Argon 18 | SUM Pro Road Carbon Frameset

For the classics, the centuries, and every climb between.

The Argon 18 SUM Pro is a pro-level road racing frameset engineered to remain fast, responsive, and efficient across every type of course.

Its aerodynamic tube profiles, optimized carbon layup, and 850-gram painted frame deliver lightweight climbing performance without sacrificing stiffness or power transfer. Rider-focused compliance, refined race geometry, fully integrated cabling, and Argon 18’s adjustable 3D system give the SUM Pro a responsive yet composed ride quality rarely found in an aero race platform.

Key Features

• Pro-Level Carbon Layup
An optimized carbon construction keeps the painted Medium frame at approximately 850 grams while maintaining race-ready stiffness and power transfer.

• Responsive Ride Quality
A D-shaped seatpost, indented seat tube, dropped seat stays, and slender top tube provide compliance without dulling the frame’s response.

• Next-Generation 3D System
The adjustable headset system raises the cockpit and expands the available fit range without compromising front-end stiffness.

• Modern Open Platform
Fully integrated cabling and a non-proprietary cockpit provide clean aerodynamics with greater freedom when selecting components.

Technical Specifications

• Category
Road Disc Frameset

• Discipline
Road

• Wheel Size
700C

• Drivetrain Compatibility
Optimized for Electronic Road Drivetrains

• Construction / Material
Pro-Level Carbon Fiber

• Frame Weight
Approximately 850 g, Medium Painted Frame

• Fork
SUM Pro-Specific Carbon Fork

• Headset
FSA No.55R 1.5-Inch Headset with Argon 18 3D System

• Seatpost
SUM Pro-Specific D-Shaped Carbon Seatpost

• Bottom Bracket
Press-Fit BB86.5

• Brake Compatibility
Flat-Mount Disc Brake

• Axle Compatibility
12 x 100 mm Front / 12 x 142 mm Rear Thru-Axle

• Maximum Tire Clearance
30C

• Cable Routing
Fully Internal

• Front Derailleur Mount
Removable

• Additional Frame Protection
Stainless Steel Chainsuck Guard

• Color Options
Crystal Black Gloss (#111111)

At approximately 850 grams for a painted Medium frame, the SUM Pro delivers aero speed, climbing efficiency, and pro-level power transfer in one race-ready platform.