The person who builds your fit-out is the person who hands you the keys. The shell is built by a factory that has made them for decades. Everything inside it is done by six people in Napa, an hour north of San Francisco.
Bears Motorsport started as a race team, not a manufacturer. The trailers we could buy were cargo boxes with a marketing brochure — fine for hauling drywall, indifferent to the fact that a karting weekend is a mobile machine shop running on four hours of sleep. So we built our own. Then somebody at the track asked us to build theirs.
That is still roughly the size of the operation. Six people, three build bays, one trailer per bay from the day it lands to the handover. There is no production line, no rotating crew, no outsourced sub-assemblies. The person who builds your fit-out is the person who hands you the keys.
We get asked regularly why we do not scale up, and the honest answer is that scaling up would destroy the thing people come to us for. The a week or so work because one build owns one bay. Add a fourth trailer to three bays and you have invented a queue, and a queue is what the national manufacturers already do better than we ever could.
So instead of growing the output we grow the specification. The money that a bigger operation would spend on a second shift and a sales team goes into aluminium, marine birch and hours.
We are an hour north of San Francisco. You are welcome to walk the floor mid-build, put your hand on a frame on the jig, and sit in a finished trailer to decide whether the bench is where you would want it. Most people change two or three things after standing in one. That is not a nuisance — it is the entire reason we are worth talking to instead of ordering from a catalogue.
An hour north of San Francisco, in Napa. Visits are welcome any weekday — call ahead so somebody is free to walk you round rather than mid-weld.
The shell arrives empty. Below is what happens to it in each bay, and when.

Every rack, stand and bracket cut, welded and coated by us. Cut lists come straight from the CAD file we build with you on day one.

Racks, benches, cabinets and stands set to your kart, your tire sizes and the way you actually work in the paddock.

12V and 110V looms labelled end to end, 50A shore tested under load, then a full checklist walk before we hand it over.
Slot ready for a real photograph of the team in front of a finished build. Recommended 1600×900.
Tell us how you race and we’ll come back within one business day with a layout drawing and a fixed price.