Vanspeed
Sprinter Capsules
Sprinter Capsules
UPC: 00850063053143
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Vanspeed Pro-Spec Certified: Designed, field-tested, and certified by Vanspeed’s custom build engineers to ensure flawless fitment and long-term durability.
Advanced Assembly
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Capsules expand the interior width of your van to up to 79.5 inches, allowing taller occupants over 6'3" to sleep east-to-west.
This sideways sleeping layout creates significantly more usable interior space while maintaining the durability and platform-specific fitment Vanspeed is known for.
Features
Features
- Driver-side Capsule adds ~6.5" additional space (5.75" w/ Trim Kit)
- Passenger-side Capsule adds ~5.0" (4.5" w/ Trim Kit)
- Combined lateral increase ~11.5" (10.25" with optional Trim Kit)
- Fiberglass gel-coated, ready for prep/primer/paint
- Designed via CAD & professional drafting for precise fitment
- Manufactured in California
Factory Sprinter wall curvature limits width, forcing diagonal sleeping/narrower beds; Capsules add true horizontal sleeping space (interior width to 79.5in, fits people 6'3"-6'6" sleeping sideways).
Fitment
Fitment
2008+ Sprinter 144 & 170 / 2014+ 170 EXT. Note: Sprinter 170 Capsules are not compatible with the middle factory window.
Additional Details
Additional Details
Vanspeed Capsules add up to 10 inches of head-to-toe sleeping area via durable lightweight fiberglass with aerodynamic, precise-fit design. Suitable for DIY or professional install. Optional Bunk Window add-on before checkout; optional Phoenix Coating spray finish (dent/scratch/UV protection, easy-clean, controlled texture).
Installation
Installation
Installation requires cutting the factory body panel — a structural modification. Professional install recommended unless experienced with metal fab. Detailed fitment/cutting/mounting/hardware instructions included. Integrates with standard van insulation strategies after install. Changes exterior profile but designed to integrate cleanly with body lines.
What's Included
What's Included
2 fiberglass gel-coated Capsules (driver + passenger, ready for prep/primer/paint); 3 tubes of SikaFlex Urethane; necessary hardware for mechanical adhesion; 1033 Bunk Windows included if that option is chosen.
Frequently Asked Questions
Do capsules require cutting?
Do capsules require cutting?
Yes. Installation requires cutting the factory body panel to integrate the expansion units into the exterior wall structure. Professional installation is recommended unless experienced with metal fabrication and body modification.
Are instructions included?
Are instructions included?
Yes. Detailed fitment guidance covers cutting measurements, mounting procedures, and hardware placement for a secure, weather-resistant install.
Do they affect insulation?
Do they affect insulation?
Capsules integrate with standard van insulation strategies; the expansion area can be insulated and finished like the rest of the interior wall system.
Will Sprinter Capsules affect the exterior appearance of my van?
Will Sprinter Capsules affect the exterior appearance of my van?
Yes. Capsules extend the side body outward to increase interior width, changing the exterior profile, but are designed to integrate cleanly with the van's body lines.
Can tall people sleep sideways in a van with Capsules?
Can tall people sleep sideways in a van with Capsules?
Yes. Capsules expand interior width to 79.5 inches, allowing people 6'3" and taller to sleep east-to-west.

HOW EASY IS IT TO INSTALL CAPSULES? / FULL INSTALL VIDEO
Overall the capsules are great and I am glad I purchased them. IMO, they look much nicer than the other brand's bubble-style capsules.
However, some small annoyances:
1. There were a few small craters/holes in the surface of the capsules, about the size of a pea, where there were inconsistencies in the fiberglass casting process. These holes didn't go all the way through, but they were large enough that I worried about water getting into them and freezing and causing bigger problems so I had to fill them with body filler before painting. I feel like this should have been caught during the production process.
2. Why not include the primer? This stuff is hard to find and takes a week+ to deliver from stores online. My Vantek windows came with tubes of the Dow 5504 betabrime, why don't you guys throw this in with the kit? They're like $9 per tube. This was the biggest pain.
3. The little black screws for the window compression flange suck. I was extremely careful during installation, making sure everything was perfectly aligned, hand tightening them by hand with a regular screw driver, and still three of the heads snapped off. I think overall the design of the window flange fastening system should be improved.
Mounted the capsules on my transit xl and they worked perfectly. Of all the items I have done so far on my van build, this one made me the most nervous (cutting big holes in the side). It was actually the easiest part of the build so far. I Raptor lined them and just followed there Youtube video on how to install. If you are nervous, don't be.
Overall the capsules worked out great! Arrived in perfect condition and installation was relatively easy. One of the capsules doesn't follow through contour of the van perfectly, but close enough for the adhesive to make the seal. Though expensive, it appears to be the best option on the market. Definitely recommend 2 people for the install process if possible, even if you are a confident individual 😉
Easy to install and well made. The only thing we wonder is why the reveals don't match the van contours a little better, but it's not problematic.
WHAT SETS US APART
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EASY INSTALL
Step by step intructions for a seamless installation process.
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PRECISE ENGINEERING
We take pride in engineering, sourcing and testing the products we offer.
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TRUSTED PRODUCTS
Our products at the Van Mart are trusted by some of the top builders in the U.S.