The GR3 isn’t just a gravel bike—it’s the evolution of everything gravel riding demands. Designed from the ground up around our progressive TrueGravel geometry, the GR3 climbs with snap, descends with confidence, and thrives across the unpredictable mix of road, singletrack, and chunky gravel that defines real rides.
Now, select GR3 framesets, chassis, and complete builds are available in stock—ready in a fraction of the usual time. While our custom program typically runs 12–16 weeks, in-stock GR3s can ship in as little as 4 weeks from deposit to delivery.
Don’t see your size? Click here to Contact Us, and we’ll build yours in the next run of Supernauts.
What to Expect After Deposit
Every Argonaut is personal. Once you place your deposit, a member of our team will reach out to confirm the details of your order:
If you’re unsure of your size, we’ll help you get it right. We can:
Connect you with an authorized Argonaut fitter
Work from your most recent professional fit data
Or guide you through simple at-home measurements to determine your complete build configuration
See our full Supernaut GR3 Size Chart at the bottom of the Supernaut information page or in the product gallery.
This is not mass production. It is Argonaut precision—delivered with immediacy, without compromise. A bike built to be ridden, raced, and remembered.
Close your eyes, follow your instincts—you’ll find yourself on your Supernaut.
In Stock Sizes | 505, 515, 530, 545, 560, 590 |
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Color | Caribbean Pearl |
Build Option | Frameset, Chassis |