A tough, responsive carbon rim built for modern gravel riding. Circos balances low weight with the durability you need for long mixed‑terrain days, loaded bikepacking, and the unpredictable surfaces that define real‑world gravel. Lace it to your favorite hubs, pair it with Teravail tires, tape, and valves, and you get a clean, dependable tubeless system with a dialed ride feel.

What Makes It Different

Circos is designed around the wide‑tire, high‑volume reality of today’s gravel bikes. The hookless profile and reinforced construction handle washboard, chunky connectors, and fast descents without flinching. The rim shape supports stable cornering, predictable compliance, and confident handling when the terrain gets loose or rough.

Bakersfield Notes

From the hardpack out toward the riverbed to the sandy stretches on the way to the foothills, Circos hits the sweet spot: stiff enough to stay precise, forgiving enough for long days, and strong enough for the surprise hits that come with local gravel.

Specs

• Carbon construction tuned for gravel durability and ride quality
• Wide internal profile optimized for modern gravel tires
• Hookless design for impact strength and consistent tubeless performance
• Reinforced spoke bed for long‑term tension stability
• Tubeless‑ready and optimized for Teravail tape and valves
• Front/rear‑specific drilling for ideal spoke bracing angles
• ETRTO compliant
• Tested to gravel‑appropriate ASTM standards
• Available as a rim or complete wheelset (hub options vary by build)

Who It’s For

• Gravel riders who want carbon performance without fragility
• Bikepackers who need a rim that stays true under load
• Riders building a custom wheelset around their preferred hubs
• Anyone who wants a clean, reliable tubeless setup with Teravail components

Grizzly’s Take

Circos is the kind of carbon gravel rim that actually makes sense for Bakersfield riding. It’s fast, stable, and built to handle the mix of hardpack, washboard, and chunky connectors we see every day. Pair it with Teravail tires and valves for a system that just works.