Interior Framing System for Sprinter Van Conversions - The “Backbone” of Your Van Build
Transform your crew or cargo van into a professional-grade adventure rig with the Lost Hiway Builder Foundation Kit. This complete interior framing system creates a strong, continuous mounting surface so you can securely install wall panels, overhead cabinets, L-track, and more, without drilling into factory holes.

CNC Files Included: CNC cutting files for all wall and ceiling panels are included with this Foundation Kit.

• Built to last: Precision-engineered from 16-gauge powder-coated steel for unmatched strength and durability.
• Frustration-free install: Includes all hardware, a step-by-step installation video, and direct access to our support team.
• Professional foundation: Provides the structural framework needed for a clean, solid, and safe build. So that you can build like a pro! 
• Versatile design: Compatible with cabinets, bed systems, and accessories along the full length of your van.
• From Start to Finish: Lost Hiway has you covered. Compatible with the entire Lost Hiway product catalog of interior components, the only true “one-stop-shop” kit. 

KIT INCLUDES: 

• Powder Coated Steel Structural Bracing
• L-Track
• Custom Fit GoCode Trim Finish Kit 
• Installation Hardware
• Installation Guide 
• CNC cutting files for all wall and ceiling panels

Foundation Kit — Plan Your Finished Interior Separately

This kit provides the structural bracing, L-track, GoCode trim finish kit, installation hardware, installation guide, and CNC cutting files for all wall and ceiling panels listed above. It is the foundation for your interior build. Plan your wall-panel materials, cabinetry, and other interior components separately; compatibility with an accessory does not mean that accessory is included.

Building a Ford Transit? See our Lost Hiway Transit Kit for the vehicle-specific package.

Trusted by DIY builders and professional upfitters nationwide, the Builder Foundation Kit is the first step toward a smarter, stronger, and more adventure-ready van conversion.

Install Video

Install Video Link
L-Track Explained Link (144)
L-Track Explained Link (170)

Sprinter Vans

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