If you’re outfitting a work truck, you’ve probably run into two very different approaches: a SpaceKap truck cap and a full service body. Both turn a pickup into a rolling shop, but they work in very different ways — and the right choice depends entirely on how you work.
At Star Truck Equipment in Wharton, TX, we carry both SpaceKap caps and full service bodies from top brands like STI (Service Trucks International), CM, and RKI. Here’s what you need to know before you decide.
What Is a SpaceKap?
A SpaceKap is a modular, enclosed truck cap system that installs over your existing pickup bed. It’s designed for tradespeople who need dry, organized storage without committing to a permanent service body conversion. SpaceKap units are made from fiberglass-reinforced polymer panels — lightweight, weatherproof, and fully enclosed.
Key SpaceKap features:
- Modular design — Removable panels and drawers can be reconfigured as your needs change
- Lightweight construction — Adds minimal weight vs. a full steel service body
- Dry, secure storage — Lockable, weatherproof; ideal for tools, parts, and equipment
- Installs on standard pickup bed — No cab-to-axle measurement required; fits most half-ton and 3/4-ton trucks
- Removable — Can be transferred between trucks or removed entirely
SpaceKap is popular with HVAC techs, plumbers, electricians, and service technicians who want a clean, organized setup without a full truck body conversion. See our SpaceKap models here.
What Is a Full Service Body?
A full service body replaces your factory pickup bed entirely. It’s built from heavy-gauge steel (or aluminum) and mounts directly to the truck chassis. Service bodies come with compartments, doors, shelves, and drawers built into the sides — and can be customized with crane bodies, ladder racks, generator mounts, and more.
Top service body brands we carry at STE:
- STI Service Bodies — Heavy-duty, highly configurable; built for demanding service applications
- CM Service Bodies — Trusted workhorses for contractors, utilities, and fleet buyers
- RKI Service Bodies — Made in Houston, TX; excellent storage density and quality
Service bodies are the standard for utility crews, mechanics, contractors, and oilfield service companies that need maximum storage capacity, a rugged platform, and the ability to add auxiliary equipment.
SpaceKap vs Service Body: Head-to-Head
| Feature | SpaceKap Cap | Full Service Body |
|---|---|---|
| Weight Added | ~300–500 lbs | ~800–1,800 lbs |
| Truck Requirement | Standard 1/2- to 1-ton pickup | 3/4-ton to 1-ton+ (often chassis cab) |
| Payload Impact | Minimal | Significant — know your GVWR |
| Storage Capacity | Good for tools and small parts | Excellent — compartments on both sides |
| Customization | Modular shelving and drawers | Highly configurable (crane, racks, welders) |
| Permanent Modification | No — bolt-on, removable | Yes — replaces factory bed |
| Weatherproofing | Excellent (enclosed cap) | Excellent (lockable steel compartments) |
| Crane Compatible | No | Yes |
| Best For | Light to medium service trades | Heavy trades, utilities, oilfield, mechanics |
| Price Range | Lower upfront cost | Higher investment, longer lifespan |
When to Choose a SpaceKap
A SpaceKap is a great choice if:
- You’re driving a half-ton or 3/4-ton pickup and can’t (or don’t want to) move to a chassis cab
- Your tools and parts are light to medium weight — HVAC parts, electrical supplies, plumbing fittings
- You want enclosed, weatherproof storage without permanently modifying your truck
- You need to move the unit between multiple trucks
- You’re working alone or with a small crew and a full service body would be overkill
- Budget is a priority and you want a professional setup without the full service body price tag
Tradespeople who thrive with SpaceKap: residential electricians, HVAC service techs, plumbers, pest control technicians, property maintenance pros.
When to Choose a Full Service Body
A full service body is the better call if:
- You’re hauling heavy equipment, large tools, or inventory on a daily basis
- You need crane capability — a crane body or RKI crane body can be added to a service body
- You run a fleet and need standardized, durable storage across multiple trucks
- You’re in oilfield, utility, or heavy construction where a SpaceKap wouldn’t survive daily abuse
- You need side-access compartments large enough for power tools, compressors, generators, or hydraulic equipment
- Your truck is already a chassis cab (F-450, F-550, Ram 4500/5500) — get the most out of it with a full body
Industries that go straight to service bodies: utility companies, oilfield contractors, mechanics, fleet maintenance crews, construction superintendents, crane truck operators.
What About the In-Between Option?
Some buyers ask: “Can I get the best of both worlds?” The honest answer is — yes, in some cases. A SpaceKap can be paired with a ladder rack, tongue box, or side toolbox to expand capacity. But if your storage needs are genuinely heavy or your work is physically demanding, a full service body will serve you better long-term.
We’ve also seen buyers start with a SpaceKap on a 3/4-ton truck, grow their business, and then move to an STI service body on a cab-and-chassis. Both choices were right — at different stages of their business.
Get Expert Advice from Star Truck Equipment
We’re not here to upsell you into something you don’t need. At Star Truck Equipment in Wharton, TX, we help Texas and Louisiana tradespeople and contractors find the right truck body for their specific work — whether that’s a SpaceKap cap, a full STI service body, or something in between.
Call us at (979) 532-1486 to talk through your options, or browse our service body inventory and SpaceKap options online. We serve customers throughout Texas and Louisiana from our location at 2507 County Rd 231, Wharton, TX 77488.
