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Icon PDX laser graphics package on Pink and Black frame with Gates drive.

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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 precision CNC’d bottom bracket shows an unyielding attention to matching process, beauty and function.

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

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Our gold anodized option can form the foundation of a head-turning city or town bike.

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

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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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Please refer to this guide for sizing assistance. If you're in-between sizes, don't fit the current size range, or require something different, please contact us about custom geometry options.

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Click "Get Started!" to talk to us about building your CIRCA.