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Each Circa frame is hand-built to your specifications in Portland, Oregon.

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Color is a great way to give your bike personality. In a Circa design session, you can pick from a fun palette of durable anodized finishes and get creative with how colors are applied to different parts of the frame to create a bike that's distinctly yours.

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The horizontal Circa dropouts are built for versatility, so you can build with almost any drivetrain including derailleurs, single-speeds, internally geared hubs, and even Gates Belt Drives.

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Circa's versatile dropout is Gates Carbon Drive compatible.

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This gold Trillium has a super-fun vibe.

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Our aluminum tubing and billet, CNC'd lugs, finishes and final assembly are all produced in the U.S.A.

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Circa's anodized finishes are lighter and tougher than paint, and impervious to the harshest weather.

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Please refer to this guide for sizing assistance. If you're in-between sizes, or you don't fit the current size range, please contact us and we'll see what we can do.