Trailers BM-16 Sprint BM-24 Circuit BM-32 Paddock BM-Moto & Snow Configure Shop Time The Shop Specs Gallery FAQ Get a build slot
2 build slots open · August 2026

We don’t build
the box.
We build what goes in it.

A small fit-out shop in Napa, California. The shell comes from a factory that has made them for decades and makes them well. What a factory cannot know is what a karting weekend actually needs. That part is ours.

5–10Days in our shop
100%Fit-out done in Napa
$9,900Starting price
1Trailer per bay
DWG. BM-24-CIRCUIT · REV CSCALE 1:48
24' 0" 7'6" INT. 8× TIRE POS. BENCH + VISE 4× KART BAY
24'Length
4Karts
7,000lb GVWR
14dLead time
KARTING · MOTOCROSS · SNOWMOBILE · HAND-BUILT IN NAPA CA · DAYS NOT MONTHS · factory-built ALUMINUM · PRICED LINE BY LINE · ONE BUILD AT A TIME · KARTING · MOTOCROSS · SNOWMOBILE · HAND-BUILT IN NAPA CA · DAYS NOT MONTHS · factory-built ALUMINUM · PRICED LINE BY LINE · ONE BUILD AT A TIME ·
// Why Bears

Four reasons people
skip the big factories

01 / SPECIALISTS

Built by karting people

We race out of our own trailers. Kart stands at the right height, an engine bench that fits a KA100, fuel storage that passes tech, tire racks that don't rattle loose at 70 mph.

02 / SPEED

about a week, not 6 months

Fitting out a shell is days of work, not months. The wait everyone else quotes is queue time, not build time. We hold a fixed number of slots, and yours occupies a bay until it rolls out.

03 / LOCATION

Napa, California

Drive in, walk the floor, spec it standing next to the frame. Everything is welded, wired and finished under one roof — with warranty work handled by the same hands that built it.

04 / VALUE

You see what each part costs

Nothing is bundled. Good plywood, good hardware and real hours cost us less than a middleman costs you — so the spec goes up and the price comes down.

// The lineup

Four platforms.
Infinite fit-outs.

Every trailer starts from one of four chassis, then gets built around your paddock routine. Prices shown are starting points for the standard fit-out.

// Production schedule

What we do
with your week

This is the sequence once your shell lands in Napa. One trailer per bay, and nothing else moves into that bay until it rolls out.

Stage
1234567
Shell in & prepDAY 1
INSPECT, STRIP, MEASURE
FabricationDAY 1–3
RACKS · STANDS · BRACKETS
InteriorDAY 3–5
WALLS · FLOOR · TOOL WALL
Fit-outDAY 4–6
BENCH · CABINETS · FUEL
ElectricalDAY 5–7
12V + 110V, LOAD TESTED
QC & handoverDAY 7
KEYS
3–5 months
Ordering a fitted race trailer elsewhere
5–10 days
Our shop, once the shell arrives
Read the full build process →

Two slots left for August.

Tell us how you race and we'll come back within one business day with a layout drawing and a fixed price.

Book a slot → Configure first
2 slots leftAugust 2026
Book a slot