Which Campervan Bed System Should I Choose for My Spartan Conversion?

It’s the heart of your camper – a place to sit, relax, dine, and sleep – so it needs to be practical, comfortable, and built to last. At Spartan Campers, we’re often asked: “Which bed system should I choose?” There are a few great options on the market, but we’ll walk you through three of the best: the FWX Slide-Out Bed, the Mobiframe Bed on Rails, and the RIB Bed.

We use and recommend the FWX slide-out system from Fabworx in most of our conversions. It’s beautifully engineered, incredibly easy to use, and perfectly aligns with what Spartan stands for – quality, safety, and design that’s made by campers, for campers.

---

1. FWX Slide-Out Bed System

What it is:
The FWX bed is a precision-built slide-out rock and roll system designed here in the UK by Fabworx. It transforms from a secure rear seat into a flat, comfortable bed in one smooth motion. With integrated ISOFIX points as standard in every Spartan conversion, it’s ideal for family adventures too.

Why we love it:
At Spartan Campers, we reupholster every FWX bed in premium materials to match the rest of your camper’s interior. The result is a seamless finish that feels cohesive, comfortable, and truly bespoke – it’s one of the key touches that makes a Spartan build stand out.

Pros:

• Effortless slide-out design: Converts from seat to bed in seconds.

• Flat, comfortable sleeping surface: No awkward ridges or uneven joins.

• Safety-tested and ISOFIX ready: Ideal for travelling with children.

• Stylish integration: Upholstered in-house to match your camper’s theme.

• Compact and clever: Designed to maximise usable space in your van.

Cons:

• The seat position is fixed rather than fully track-mounted, so it doesn’t slide front-to-back like a rail system – but for most layouts, this isn’t needed.

For most Spartan builds, the FWX system offers the perfect balance of comfort, safety, and effortless usability. It’s a design we trust, because we use it ourselves when we hit the road.

---

2. Mobiframe Bed on Rails System

What it is:
The Mobiframe system uses a floor-mounted rail setup, allowing the seat to slide along the van floor to create different seating and storage layouts. It’s a strong, well-built system that prioritises flexibility.

Pros:

• Adjustable layout: Slide the seat to suit your needs for travel, lounging, or sleeping.

• Safety-tested: Fully certified for on-road use.

• Spacious options: Can work well for larger vans where space allows.

Cons:

• Heavier setup: The rail system and mechanisms add extra weight.

• More complex installation: Requires precise alignment and regular maintenance to stay smooth.

• More mechanical look: Lacks the soft, integrated feel of a Spartan-finished FWX bed.

Mobiframe systems are excellent for those who want maximum adjustability, but the mechanical nature of the rails can take away from the clean, fitted aesthetic of a Spartan interior.

---

3. RIB Bed System

What it is:
The RIB bed is a well-known folding seat-bed system often used in campervan conversions. It folds forward into a bed and has long been trusted for durability and comfort.

Pros:

• Reliable and proven: A long-standing favourite in the camper community.

• Simple operation: Easy to fold out into a flat bed.

• Available in various sizes: Can be adapted to different van layouts.

Cons:

• More basic finish: Unless re-trimmed, it can look like an add-on rather than a fully built-in part of the conversion.

• Heavier mechanism: Folding can take a little more effort.

• Less flexibility: Fixed mounting limits layout adjustment.

Rib beds are a dependable option, especially if you value simplicity. But compared with the FWX, they don’t quite reach the same level of integrated design and comfort we aim for at Spartan.

---

So, Which One Should You Choose?

Each system has its strengths, but here’s our honest verdict based on years of experience building and living in our own vans:

1. FWX Slide-Out Bed – Our Spartan Favourite
   Smooth, safe, and stylish. ISOFIX-ready, M1 tested, and reupholstered to perfection. This is the bed system we trust in our own conversions – comfortable by night, sleek by day.

2. Mobiframe Bed on Rails – For Ultimate Flexibility
   Great for those who prioritise movable seating layouts, though heavier and more technical to install.

3. RIB Bed – Reliable and Practical
   A solid choice, but less integrated than the FWX once installed.

At Spartan Campers, we believe your van should feel like an extension of you – built for adventure but finished with the kind of quality you can be proud of. The FWX bed fits that perfectly: durable, easy to use, and designed to last the lifetime of your camper.