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


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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Circa's versatile dropout is Gates Carbon Drive compatible.


This gold Trillium has a super-fun vibe.


The horizontal, 132.5mm spaced Circa dropouts give you tons of options for drivetrains and accessories, including the super-clean Gates Carbon Drive.

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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.