2025 Argon 18 Sum SRAM Force AXS Carbon Aero Race Road Bike
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Product Description
2025 Argon 18 Sum SRAM Force AXS
The All-Rounder Aero Evolution. Lightweight Performance, Wind-Slicing Speed.
The 2025 Argon 18 Sum is the perfect marriage of the aerodynamics of the Nitrogen and the pure climbing agility of the Gallium Pro. Engineered to dominate every segment of your race, the Sum features a redesigned carbon layup that prioritizes handling and power transfer. Equipped with the wireless SRAM Force AXS E1 groupset and Scope R4 carbon wheels, this is the ultimate tool for the competitive cyclist who refuses to choose between aero and weight.
Key Highlights
- CFD-Optimized Aero Frame: Minimalist frontal area and aggressive aero profiles designed for real-world racing conditions.
- SRAM Force AXS E1: Features redesigned hood ergonomics and a built-in power meter for elite-level training and racing.
- Scope R4 Carbon Wheels: Lightweight yet deep enough to provide a significant aerodynamic advantage on flats and descents.
- Integrated Cockpit: Fully internal cable routing through the FSA SMR-II system for a clean look and reduced drag.
- Aero Seatpost: Sum-specific carbon seatpost designed for maximum aerodynamic efficiency and compliance.
Technical Specifications
| Frameset & Cockpit | |
|---|---|
| Frame | SUM Carbon Aero Race, Fully Integrated Cables |
| Fork | SUM Specific Carbon, Flat Mount Disc |
| Headset | FSA NO.55R 1.5'' + 3D System |
| Handlebar | FSA Energy SCR Compact |
| Stem | FSA SMR-II Integrated |
| Seatpost | Argon 18 SUM Specific Carbon |
| Saddle | Repente Quasar |
| Drivetrain & Shifting | |
| Groupset | SRAM Force AXS E1, 2x12 Speed Wireless |
| Crankset | SRAM Force AXS E1 with Integrated Powermeter, 48/35T |
| Cassette | SRAM XG-1270, 10-33T XDR |
| Bottom Bracket | SRAM DUB PF 86.5 Road |
| Chain | SRAM Force 12-Speed Flattop |
| Brakes & Wheelset | |
| Brakes | SRAM Force AXS Hydraulic Disc |
| Rotors | SRAM Centerline XR Centerlock (F: 160mm / R: 140mm) |
| Wheels | Scope R4 Carbon, Tubeless Ready |
| Tires | Vittoria Corsa N.EXT TLR 28mm |
| Clearance | 30c (32mm Measured) |
Ride Character
The 2025 Argon 18 Sum is built for those who want one bike to do it all at the highest level. It offers the lightning-fast acceleration of a climbing bike with the drag-reducing profiles of a dedicated aero frame. Thanks to the SRAM Force AXS E1 groupset, shifting is effortless and intuitive, while the integrated power meter ensures you have the data needed to push your limits. On the flats, the Scope R4 wheels hold speed with ease, and on the descents, the Sum's race-tuned geometry provides surgical precision.
