XTR Substructure Kits

Strengthen, modify, and expand your XTR bed rack setup with substructure kits and support accessories from Xtrusion Overland. This collection includes slide-out kits, awning upright kits, side and top brace sets, bottom cross bar kits, parallel bar prep kits, XTR1 to XTR3 conversion kits, alternate height kits, and AXS Gate kits designed for XTR1, XTR3, XBRS, and modular truck rack builds.