Argon 18 2025 Dark Matter Shimano GRX RX822

The Adventure Begins Now

From grueling race days to the unknown, the Dark Matter is your ultimate gravel machine. Built to handle all terrain thanks to its rugged design, it takes on whatever the path throws at you — and conquers it.

3D System

Enjoy optimal adjustment range without compromising steering column stiffness, safety, or the aesthetics of your bike, thanks to Argon 18's 3D technology.

Gravel Geometry

Our Gravel geometry is inspired by our Endurance geometry, which itself is based on our performance road bikes — where exceptional handling, high responsiveness, and optimal positioning are key.

Topological Compliance System

This exclusive design approach delivers outstanding vertical compliance and dampens road-induced vibrations, while maintaining maximum stiffness.
Each bike model featuring TCS technology has been individually analyzed to optimize frame topology and carbon layup.

Argon Fit System

Argon 18's AFS (Argon Fit System) offers size-specific geometries to optimize performance and positioning across all frame sizes, ensuring no rider is left behind.

Integrated Toolkit

Innovative design that provides access to the frame’s interior space for integrated storage of gear and nutrition.

Shimano GRX RX610/822 Components
Vittoria Terreno T50 Mixed 700x50c

The Terreno T50 Mixed endurance gravel tire — positioned between the Terreno Dry and the Mezcal — features a versatile tread pattern with new directional grooves and grip-enhancing knobs for greater control and confidence. It's an excellent choice for a wide range of surfaces. Its endurance casing is built for adaptability and strength, with reinforced nylon sidewalls for improved puncture resistance and added stability.

DT Swiss G1800 Microspline

Get the most out of your next off-road adventure with this durable wheelset, thoughtfully developed with precisely selected components. Its wide rim provides comfort and versatility. Equipped with robust spokes and a reliable ratchet hub, it’s ready to take you far off the beaten path. Plan your next bikepacking trip with peace of mind thanks to this dependable wheelset.

GRX RX822, 51T Max

With its integrated chain stabilizer, the SHIMANO GRX rear derailleur ensures quieter shifting and better chain retention on rough terrain. The RD-RX822-SGS is compatible with SHIMANO 12-speed MTB 10-51T cassettes, ensuring you never run out of gears — even on the steepest climbs or alpine trails. The chain tensioner features an ON/OFF switch for easy wheel removal.