Shredding Trails

At Argonaut Cycles in Bend, Oregon, the GR3 wasn’t developed to fill a gap in the market. It was built to handle terrain that doesn’t behave predictably. Loose surfaces, shifting lines, and sustained efforts all place competing demands on a gravel bike. The GR3 exists to manage those demands without compromise.

Designed for How Gravel Is Actually Ridden

The GR3 is the result of multiple years of testing across Central Oregon’s varied terrain. Fast roads, rough gravel, sandy cinder, and technical singletrack all informed the design. 

The goal was not versatility as a feature, but consistency across conditions. The bike needed to remain stable when the surface deteriorates and responsive when the pace increases.

What Defines the GR3

The geometry and construction work together as a system. 

A slacker front end improves stability at speed, while short chainstays maintain responsiveness under load. A lower bottom bracket increases composure through corners and uneven terrain, and tire clearance up to 50c allows the bike to adapt to different conditions. The carbon layup is tuned for durability and predictable ride behavior over long distances.

How It Performs

The GR3 is not optimized for a single scenario. It is built to hold its character as terrain and effort change. Whether moving from smooth gravel to technical sections or from steady pacing to hard accelerations, the bike maintains control and efficiency without requiring adjustment from the rider.

External Perspective

Cycling Weekly described the GR3 as a bike that “shreds trails,” highlighting its ability to remain composed while carrying speed across varied terrain. The observation aligns with the intent behind the design: a gravel bike that performs when conditions become less predictable.

The GR3 is built for riders who push beyond ideal conditions. For a closer look at how it performs in real-world riding, explore the full review >