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Argon 18 Grey Matter Gravel Bike - Sram Apex


Product Details

Please note, this product is the Sram Apex Groupset version, the photographed is the Sram Rival Groupset version.

Get rough and ready for anything with the new Grey Matter. The gravel-specific handling and features that made the Dark Matter the ultimate gravel machine is now available in an alloy frame.


Go On. Get Lost.

Really – go get lost. You’ve got extra snacks, gear, and you’ve got the bike that will go anywhere with you. Kicking up rocks on an old logging road? No problem. Muddy singletrack? Comes off easy. Grit pinging your frame for the next hundred miles? Didn’t notice. Get even further off the beaten path with a bikepacking-ready ride with fender and rack mounts, and up to six bottle and utility mounts, depending on size. Also with internal cable routing at the headset and external at chainstays, and our 3D headset with cable integration for easy maintenance and dialed-in fit options.

Ideal for

The self-sufficient gravel adventurer - also looking for peak performance.


Gravel Geometry

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.


Max tire size

700x42c (43mm) or 650x47c (47mm)

Max rim size


Fork rake

XXS to S: 5.4cm / M to XL: 4.9cm

Fork Length (Axle-to-crown)


BB standard


Additional frame and fork mounting points

For extra bottles and gear

27.2mm Ø seatpost

For fit and performance

Carbon fork

Lightweight, compliant, and optimal handling

3D Headset

The ultimate fit and stiffness combo

For more information on sizing, use Argons 18 sizing tool.


Questions and answers