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. 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 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 LinkL-Track Explained Link (144)L-Track Explained Link (170)
