Argon 18 Nitrogen Force AXS Bike

The Argon 18 Nitrogen Force AXS Bike is built around a single, demanding premise: that an aero road bike shouldn't ask you to compromise. Not on speed, not on weight, not on fit, and not on ride quality. Argon 18 designed the Nitrogen platform to deliver all four, packaging a thoroughly engineered carbon frame with a full SRAM Force AXS electronic groupset and the brand's own ATTEN CHB-01 aero cockpit into a complete machine that's ready to race at $8,599.

The Nitrogen's carbon frame is built with what Argon 18 calls Elite Level Layup — the same quality of construction and carbon processing applied to their Pro-level machines. Every aerodynamic detail has purpose: the Flow-Optimized Headtube uses extended volume and an angled edge to reduce drag at the front of the bike; the fork is wider, deeper, and faster than its predecessor; and the horizontal, dropped seat stays — a design cue borrowed from Argon 18's Electron Pro TKO track bike and E119 triathlon platform — keep the rear end stiff and efficient. Fully integrated cable routing and an oversized T47 bottom bracket shell round out a frame built for speed without making service unnecessarily difficult.

Mounted to that frame is the ATTEN CHB-01 Aero Handlebar, developed by Argon 18's own components brand. It's designed to be the aero front end the Nitrogen's frame deserves — shaped for drag reduction and real-world ergonomic control, with an integrated computer mount and size-specific widths calibrated to each frame size. Argon 18's Fit System means the Nitrogen isn't one-geometry-fits-all: each of the six sizes carries its own stack, reach, and cockpit dimensions, so the smallest rider and the tallest get a position actually designed for them.

Design Benefits

1. Elite-level carbon construction without the Pro price — Argon 18's Elite Level Layup means the Nitrogen frame receives the same construction quality as the brand's Pro-tier bikes. The aero tube profiles, Flow-Optimized Headtube, and dropped seat stays aren't trickle-down — they're purpose-built for this platform.
2. Fully wireless SRAM Force AXS with integrated power meter — The Force AXS E1 groupset brings clean, cable-free shifting and braking. The crankset already carries a built-in power meter, so training and racing with power data doesn't require an additional purchase or a separate sensor install.
3. Scope R6.A wheels — aero depth matched to the frame — The 65mm deep Scope R6.A wheelset is tuned for ultra-responsive ride feel and pairs naturally with the Nitrogen's aero design. Rolling on Vittoria Corsa N.EXT TLR 700x30 tires in tubeless-ready configuration, the complete wheel-tire system is built for fast roads and real-world conditions alike.
4. Argon Fit System across six sizes — Each frame from XXS to XL has its own proportional stack, reach, and cockpit dimensions. This isn't a single geometry stretched across a size run — it's six individually calibrated positions designed to give every rider optimal efficiency and handling.
5. ATTEN CHB-01 cockpit — Argon 18's in-house aero solution — Rather than spec a generic handlebar, Argon 18 equipped the Nitrogen with their own ATTEN CHB-01 Aero Handlebar, developed in-house for aerodynamic performance and real-world ergonomics. The integrated computer mount keeps your head unit tidy and positioned correctly at the front of the bike.

Final Take

The Nitrogen hits a compelling position in the aero road bike category. At $8,599, you're getting a carbon aero frame built to the same construction standard as Argon 18's Pro line, paired with a fully wireless drivetrain that already includes a power meter, deep aero wheels, and a purpose-built cockpit. It's a complete race-ready package for the rider who wants genuine aerodynamic performance and built-in training tools without sourcing individual upgrades. Available in Harvest Moon and Cosmic Teal across six sizes (XXS–XL), the Nitrogen is designed to fit riders of all builds — without asking them to compromise on fit or performance to get there.