All images on this page are used for illustrative purposes only. Actual bike specifications may vary depending on country and assembly options available. Please refer to the Features and Configurations section below for options available in your region.
Go way off the beaten path with this gravel racer featuring true road race-inspired geometry derived from Argon 18’s legendary race bikes. Some will blaze the trail, but on the Dark Matter, you will scorch it.
Where the pavement ends
For when the route is unpredictable – but the ride must be solid. Head way off the beaten path with this gravel racer featuring performance-driven geometry derived from Argon 18’s legendary World Tour bikes. Go wherever the day takes you with assured handling and optimal power transfer, to control the terrain regardless of the surprises it may throw at you. We wanted a bike that offered supreme confidence alongside racing behaviour, a bike that would feel just as playful and responsive on the dirt as it would on the road.
Our gravel geometry provides fork rake specific to frame size, to allow for tight turn clearance on more technical runs, and with an eye toward ride quality, the Dark Matter features seatstays designed to flex and dissipate shocks. You'll also get three head tube extension heights for every frame size with our streamlined 3D+ system: 0mm, 15mm and 30mm.
Gravel racers looking for poppy performance and nimble responsiveness on all terrain.
For our newest generation of bikes, we wanted to push our 3D System even further by merging it seamlessly with the frame.
Modular Cable Console
Di2 and wireless optimized, compatible with mechanical and EPS groupsets.
Our gravel geometry draws on our endurance geometry, itself directly inspired by our performance road race series, meaning handling, responsiveness and race-ready positioning are paramount.
Topological Compliance System
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.
Argon Fit System
Argon Fit System is designed to provide riders of all sizes with consistent performance and optimal positioning.
Elite Level Layup
We believe the discerning cyclist deserves more than just trickle-down technology. Our Elite level bikes benefit from the same attention to detail as our Pro level ones.
Features & Configurations
Max tire size
45c (for both 700C and 650B)
Max rim size
Fork Length (Axle-to-crown)
XXS to S: 5.4cm
M to XL: 49cm
Removable Front Derailleur Hanger
For clean installation of 1x, compatible with 46/30T to 52/36T or 1x46T
Flat Mount Disc Brakes (140/160 Rotors)
Powerful braking for riding confidence in all conditions. When using fenders, 140mm rear rotor is recommended
Optional Direct Mount Rear Derailleur Hanger
For added versatility and optimal installation
12mm DT-Swiss Type Thru-Axle
Fast wheel changes, light and sturdy axles. 100mm front and 142mm rear
Inlaid Chainsuck Protector
Protects the carbon chainstay against wear from the chain's movement and features integrated drainage
Downtube Protector with Bottle Mount
Provides access to internal cable routing
45C (48mm) Tire Clearance
40C (43mm) with fenders. Limitations may apply with specific groupsets
27.2mm Carbon Seatpost
Offers adjustable offset for optimal fit, compliance, and comfort in all riding conditions