WHY AN HPI™ Custom Semi Box
Modify your box
Customized organization
Unique finishes
What ideas do you have?
It’s how we build it
Built to Last Forever
Have our engineers design your Underbody Box with the exact measurements you need with the door configuration that works best for you

Add drawers, dividers, bulkheads, shelves, trays, chain hangers and more. Save time every day.

Enhance the appearance of your Under Body Box by choosing from a variety of finishes and custom colors.

Work with our custom product specialists and engineers to come up with a design that is perfect for you.

Over-engineered and over-built is the only way we do it. No shortcuts taken anywhere, from thick gauge premium aluminum to the best components we can source.
Everything built at Highway Products comes with our Lifetime Warranty