The Argon 18 Sum Pro is engineered for riders who demand peak performance in speed, handling, and lightweight efficiency.
Developed through CFD analysis, wind-tunnel testing, and the full Argon 18 Performance Protocol, the Sum Pro matches the aerodynamic efficiency of the fastest WorldTour aero bikes—while being significantly lighter.
Wind-tunnel data shows Sum Pro can deliver an 11-second advantage on Alpe d’Huez for a pro rider, proving its perfectly balanced integration of stiffness, weight, and aerodynamics.
Equipped with SRAM Force Etap AXS wireless shifting, the Sum Pro provides race-level responsiveness, precise handling, and exceptional power transfer, making it a true flagship platform for speed-driven riders.
FEATURES
3D System – Adjustable Headtube Integration
Argon 18’s patented 3D System provides a wider range of handlebar height adjustment while preserving front-end stiffness, aesthetics, and safety.
Topological Compliance System (TCS)
A proprietary carbon layup and structural design that enhances vertical compliance, reduces road vibrations, and maintains maximum lateral stiffness.
Pro Level Layup
Built using Argon 18’s highest-grade carbon layup, optimized for the ideal stiffness-to-weight balance with no compromises.
Road Race Geometry
Sharp handling and race-tuned responsiveness designed for riders competing at every level.
Argon Fit System (AFS)
Size-specific geometry ensures optimal performance and rider positioning across all frame sizes.
Argon 18 Performance Protocol
A rigorous development process combining CFD, wind-tunnel validation, and durability testing to guarantee every frame meets elite-level performance standards.
Lightweight Meets Aerodynamics
Wind-tunnel results show the Sum Pro rivals top WorldTour aero frames in aerodynamic efficiency while weighing less—delivering real-world gains on climbs and accelerations.
Data-Driven Development (CFD-Optimized Design)
Hundreds of CFD iterations refined every aerodynamic surface:
Optimized downtube, toptube, and seatstay profiles
Hourglass head tube for reduced drag
Ultra-narrow seatstays balancing compliance and speed
Race-Ready Durability
Each frame is tested under extreme real-world conditions—from cobblestones to high-speed descents—to ensure reliable performance, race after race.
Featherweight Performance
The Sum Pro achieves an elite stiffness-to-weight ratio.
Reference build: Dura-Ace Di2 + Scope Artech A4 = 6.41 kg complete bike.
SPECIFICATIONS
Frame: Argon 18 Sum Pro
Fork: Sum Pro specific
Headset: FSA No.55R 1.5” (with 3D System)
Cable Routing: Fully integrated
Tire Clearance: 30C (fits approx. 32 mm in practice)
Front Derailleur: SRAM Force Etap AXS D1
Rear Derailleur: SRAM Force Etap AXS D1
Shift/Brake Levers: SRAM Force Etap AXS
Crankset: SRAM Force Etap AXS 48/35
Chain: SRAM Force 12-speed
Cassette: SRAM XG-1270 10-33 (XDR)
Brake Calipers: SRAM Force Etap AXS (disc)
Rotors: Front 160 mm / Rear 140 mm (varies by build)
Wheelset: Fulcrum Racing 400
Tires: Vittoria Corsa PRO 28C (may vary by batch)
Handlebar: Black Inc Carbon Handlebar
Seatpost: Sum Pro specific seatpost
