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Argon 18 Dark Matter

Argon 18 Dark Matter
  • Color: Wild Olive
  • Color: Wild Olive
  • Color: Wild Olive
  • Color: Wild Olive
  • Color: Wild Olive
  • Color: Wild Olive
  • Color: Wild Olive
Wild Olive
GRX 2x
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And Rugged. And Dusty. Probably Unpredictable. If that sounds just about right to you, meet the Dark Matter.

Rugged race or rough adventure
The Dark Matter (INT) takes you ever further off the beaten path with new bikepacking features, cable integration, and updated stack and reach. What hasn’t changed is the confident, responsive ride that’s made it a gravel classic. Light and lean and ready to race, or now with up to four bottle mounts and full paniers, the Dark Matter goes from scrappy race-day ride to sidekick for your longest off-road adventures.

Ideal for
Gravel racers and adventure riders looking for poppy performance and nimble responsiveness on all terrain.

For our newest generation of frames, we wanted to push our 3D System further by merging it seamlessly with the frame. The fully integrated 3D+ system has become an essential characteristic of our Endurance and Gravel frames. It delivers all the handling and stiffness benefits of the original 3D system in a streamlined version, offering three head tube extension heights for every frame size: 0mm, 15mm and 30mm. This provides a proven stiffness gain of 5% at 15mm and 11% at 30mm, as compared to traditional spacers. It also allows for a larger fit window (60mm of stack adjustment compared with 30 for a traditional setup). As well, the frame integration offers an aero benefit over our traditional 3D System, smoothing the airflow over the handlebar.

Gravel throws unique challenges at riders, therefore it demands unique frame characteristics. Our gravel geometry draws on our endurance geometry, which derives directly from our performance road race series, meaning handling, responsiveness and race-ready positioning are paramount. Gravel and endurance both call for a longer wheelbase than a performance road bike, which you'll see on both the Krypton and Dark Matter. The Dark Matter features a higher bottom bracket and adjusted headtube angle and raked fork to adjust our hallmark precision handling to a wider tire size windows (up to 45C); both for ride quality and to avoid toe overlap on the twists and turns of more technical rides. Gravel geometry also features a slightly more upright position, providing a higher degree of comfort on rougher surfaces and long-haul routes.

To achieve the optimal balance of comfort and performance for our endurance line, we needed geometry uniquely aligned with the demands of long-distance riding and racing. In conjunction with the best geometry, we also needed to optimise frame topology and carbon layup. Through extensive research and analysis of stiffness, resistance, and aerodynamics using FEA and CFD software, we designed frames and forks that offer exceptional vertical compliance and dampens road-induced vibrations. At the same time, they needed to remain impervious to lateral movement, thus ensuring maximum pedaling efficiency for optimal power transfer. Our Topological Compliance System (TPS), was validated by numerous iterations of frame and fork designs tested both on the road and in our research and development laboratory using proprietary vibration testing tools.

The Argon Fit System is designed to provide riders of all sizes with consistent performance and optimal positioning. Regardless of your build, gender or your riding style, our frames are designed so that your fit will always be efficient and comfortable, ensuring the ultimate in handling. We offer sizing from XXS to XL in all of our road bikes, and XS to XL in our Tri bikes, with each size approached individually from a design and performance perspective. While a lot of manufacturers optimise performance and weight targets for a medium size frame and simply scale up or down, we assess the performance of each size based on the individual character of that particular geometry. For example, even our largest frames have exceptional stiffness without excess weight, to avoid the 'dead' feel found in some XL frames. XS and XXS retain their inherent lightweight qualities, but without excess stiffness, avoiding harsh ride quality.


Frame Dark Matter
Fork Dark Matter
Headset FSA No. 69 SRS w/ 3D
Rims/Wheels HUNT 4Season Gravel
Tires Vittoria Terreno Dry TLR G2.0 700x38C
Crankset SRAM S-350
Chainwheel 42T
Bottom Bracket SRAM GXP BB86 86.5
Chain KMC X11 EPT
Rear Derailleur SRAM Rival 1
Rear Cogs SRAM PowerGlide 1130 11-42T
Shifters SRAM Rival HRD
Handlebars FSA NS Adventure Compact HR-RD-310S
Tape/Grips Ciclovation Grind Touch
Stem FSA OS-167 Omega Pro
Brake Levers SRAM Rival HRD
Brakes SRAM Rival HRD
Saddle Repente Quasar S
Seat Post Argon 18 TDS

* Subject to change without notice.

Part Numbers

Option MPN Store SKU
GRX 2x / Wild Olive / Medium DM.M.363A.2.5 DAR25557439M