Zabrina. Start your build
Custom bicycle frame builder · Oakland, Bay Area

Custom steel bikes, built by one pair of hands.

Orange Zabrina road bike with black fenders and gold headset on a kickstand in front of a corrugated metal wall
Hand-built frames, forks & stemsFrames from $2,500

The bikes

Midnight blue Zabrina drop-bar gravel bike with gold headset and knobby tires on dry grassGold Zabrina lettering on the down tube beside a knobby front tireChainstay and bottom bracket close-up with rainbow rim stripeNavy seat stays wrapping around a gravel tire, seen from behindNavy drop-bar gravel bike with tan-wall tires on grass in front of ivy
My favorite

Drop Bar Gravel

My favorite bike to build and to ride. It tears through singletrack, fire roads, asphalt—anything you can throw at it.

HandlingSlightly slack, moderate trail
Tire clearance50–53 mm
Chainstay432–435 mm
Frame from $2,500
Orange Zabrina road bike with black fenders and gold headset in front of a corrugated wallSteel Z head badge on the orange head tube between gold headset cupsOrange-to-pink fade Zabrina road bike in a warehouseOrange fork, fender and drop bars from the sideDrop bars and head badge seen head-on
Classic, with grip

Road

A steel road bike for long days on pavement, and it won't flinch when the road turns rough.

HandlingSnappy like a vintage road bike, planted like a modern cross bike
Tire clearanceUp to 38 mm
Chainstay420–425 mm
Frame from $2,500
Yellow Zabrina hardtail mountain bike with a gold suspension forkZabrina lettering on a yellow down tube next to the forkBlue headset and stem on the yellow hardtail
Slack and wild

Hardtail Mountain

A 29er built to go toe to toe with the full-suspension crowd. Turn left, go right!

HandlingSlack and stable, 65.5° head angle
Tire clearance29 × 2.2–2.4"
Frame from $2,500
Black Zabrina flat-bar gravel bike with red lettering and red crank in a grassy fieldBlack seat stays and gravel tire seen from behind, with a red seat clampWide flat bar, red headset and Zabrina down tube from aboveSlate blue flat-bar gravel bike with front rack, fenders and purple accentsBlack Zabrina lettering on a sky blue down tube beside a fender and front rackSky blue flat-bar gravel bike with rack and fenders, a black cat sitting in front
Flat bars, on purpose

Flatbar Gravel

A gravel bike designed around a flat-bar cockpit from the start, not patched on afterward.

HandlingCalm and steady, slacker than gravel
Tire clearance45–53 mm
Chainstay437–440 mm
Frame from $2,500
Oxblood red single-speed bike in front of nasturtiumsRed single-speed bike among nasturtiumsRed commuter handlebars from the frontBrake and tire close-up on the red commuterSliding dropout and single-speed cogTeal single-speed Zabrina with a sparkle finish on grass in front of bright green leavesSliding dropout with brass chain tensioner on the teal single speed
No frills

Single Speed "Dirty" Commuter

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.

HandlingQuick and snappy
Tire clearance45–50 mm
Chainstay430–435 mm
Frame from $2,500
Black segmented steel fork leaning on a light blue and white garage door painted with ZABRINA
Stock model

Zabrina Segmented Fork

A well-built steel fork for bikepacking or commuting. A bit heavier than carbon, with a ride feel it can't match.

Axle to crown418 mm
Offset45 mm
$495

Inquire for custom geometry.

How a build works

From first email to first ride, you work with the same person the whole way.

1

Chat & fit

How and where you ride, and what you wish your bike did better.

2

Design

Custom geometry for your body, and tubing to match.

3

Build

Mitered, fixtured and TIG-welded by hand in Oakland.

4

Paint & ride

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.

Process

How the frames get made, and proof my bikes won't break in half.

TIG weld glowing with heat tint where two polished steel tubes meet
Fresh weld bead on a steel tube junction over the fixture table
Tube junction weld with rainbow heat tint
Weld wrapping a mitered tube on the welding table, wrench nearby
Head tube junction weld, with the garage shop in the background
Seat cluster welds on a raw steel frame held in a vise

The builder

One person, one garage, and two shop cat supervisors.

The builder in overalls holding a fluffy black-and-white cat in the Oakland shop

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.

Tange Japan Dedacciai Italy Columbus Italy Reynolds England
The open garage door of the Oakland frame shop Lathe and tool wall inside the shop

Press

All on The Radavist

Beyond bikes

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.

Steel-framed coffee table with a wood top in a living room
Steel & wood coffee table
Bent steel rod chair in a workshop
Bent steel chair
Brass jewelry box with a ribbed lid
Brass jewelry box
A dozen raw steel pedestal table bases with round and square feet on the shop floor
Steel table bases

Start your build

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 Instagram

@zabrinacycles