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.
Dark Matter
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.


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.
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.
Ideal for
Gravel racers looking for poppy performance and nimble responsiveness on all terrain.
Core Technologies

Features & Configurations
Max tire size
45c (for both 700C and 650B)
Max rim size
48mm
Fork Length (Axle-to-crown)
39.5cm
Fork Rake
XXS to S: 5.4cm
M to XL: 4.9cm
BB standard
BB86
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
