Every rider is different. That’s why we offer custom complete bike builds based on our proven frame platforms.

Whether you’re chasing gravel adventures, fast road miles, daily commutes, or a unique singlespeed project, we’ll help you create a bike that fits your riding style, preferences, and budget.
Complete Custom Builds aren’t a configurator — they’re a collaboration.
We build bikes for riders who have a clear idea of how and where they want to ride. Not just spec sheets, but intention. If you’re looking for something that doesn’t already exist, you’re in the right place.
Tell us about your project — your riding, terrain, preferences, and the details that matter to you. The clearer your input, the better we can evaluate how to make it work.
How it works
1. Tell us about your riding Gravel racing, bikepacking, commuting, road riding or something completely different.
2. We build your specification We’ll suggest the right frame, components and setup based on your needs and budget.
3. Review & refine We’ll work through the details together until everything feels right.
4. Ride your Sour Your bike arrives fully assembled and ready for adventures.
