Drop Bar Gravel
My favorite bike to build and to ride. It tears through singletrack, fire roads, asphalt—anything you can throw at it.
| Handling | Slightly slack, moderate trail |
|---|---|
| Tire clearance | 50–53 mm |
| Chainstay | 432–435 mm |
My favorite bike to build and to ride. It tears through singletrack, fire roads, asphalt—anything you can throw at it.
| Handling | Slightly slack, moderate trail |
|---|---|
| Tire clearance | 50–53 mm |
| Chainstay | 432–435 mm |
A steel road bike for long days on pavement, and it won't flinch when the road turns rough.
| Handling | Snappy like a vintage road bike, planted like a modern cross bike |
|---|---|
| Tire clearance | Up to 38 mm |
| Chainstay | 420–425 mm |
A 29er built to go toe to toe with the full-suspension crowd. Turn left, go right!
| Handling | Slack and stable, 65.5° head angle |
|---|---|
| Tire clearance | 29 × 2.2–2.4" |
A gravel bike designed around a flat-bar cockpit from the start, not patched on afterward.
| Handling | Calm and steady, slacker than gravel |
|---|---|
| Tire clearance | 45–53 mm |
| Chainstay | 437–440 mm |
For town and work, and it won't hesitate to dip into the dirt. When I'm in a funk, this is the bike I ride.
| Handling | Quick and snappy |
|---|---|
| Tire clearance | 45–50 mm |
| Chainstay | 430–435 mm |
A well-built steel fork for bikepacking or commuting. A bit heavier than carbon, with a ride feel it can't match.
| Axle to crown | 418 mm |
|---|---|
| Offset | 45 mm |
Inquire for custom geometry.
From first email to first ride, you work with the same person the whole way.
How and where you ride, and what you wish your bike did better.
Custom geometry for your body, and tubing to match.
Mitered, fixtured and TIG-welded by hand in Oakland.
Finished, painted, and yours to rip.
Not in the Bay Area? No problem. We can do your fit remotely and have your bike shipped directly to you.
How the frames get made, and proof my bikes won't break in half.






One person, one garage, and two shop cat supervisors.
It's me, Zach!
After years training under the watchful eye of John Caletti in Santa Cruz, I moved to Oakland and started Zabrina Cycles. Every bike I make is in pursuit of his untouchable standards and craftsmanship.
Everything is TIG-welded from lightweight, butted, bike-specific tubing.
All on The Radavist
Outside of bikes, I have a varied background in all sorts of design-build industries. From teaching welding classes at The Crucible to building high-end architectural and sculptural metal works, I'm continually expanding my realm of expertise. Feel free to reach out with any variety of metal ideas, and keep a lookout for another website highlighting this type of aforementioned work under the name Zabrina Design and Fabrication.




Ready to build or just curious, reach out. I'm always happy to nerd out about bikes.
Tell me what you ride now, where you ride it, and what you wish it did. I'll write back with ideas and next steps.
Email