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Topsider Toolboxes

Topsider toolboxes mount above the bed rails of trucks, adding storage without taking up bed space. Their elevated design keeps gear dry and accessible. With lockable lids and weather-resistant builds, they offer long-lasting performance. Topsider boxes are valued by service fleets and contractors who need to maximize storage efficiency.

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Buyers Black Diamond Tread Aluminum Topsider Contractor Truck Box w/Drawer

Buyers Black Diamond Tread Aluminum Contractor Truck Box with drawer is a slanted, double-level storage solution that mounts on top of your bed rails to save valuable space inside your truck bed. These boxes are heavy duty but light weight. Each box has two locking drawers on the bottom that include adjustable dividers.
$1,227.99 $1,323.99

Buyers Diamond Tread Aluminum Backpack Truck Box w/Flat Floor

Buyers Products Diamond Tread Aluminum Backpack Truck Box with Flat Floor adds convenient and spacious storage behind the cab. It's ideal for use on flatbeds, stake bodies, dump bodies, and utility bodies. The truck box is built with strong, corrosion-resistant .100 in. thick aluminum. A tough 1/4 in. pin, stainless steel continuous hinges, a rain channel, and watertight automotive bulb seal help keep weather and grime away from your tools. The reinforced locking, die cast compression latch provides a tight seal and helps deter theft
$3,603.99

Buyers T-Handle Diamond Tread Aluminum Contractor Truck Box w/ 2 Drawers

This is Buyers Contractor Style with two bottom drawers and adjustable dividers. Includes stainless steel locking T-handles and a 1/2" thick gasket system which helps to seal out weather and road grime.
$1,112.99 $1,240.99

Buyers Single Latch Smooth Aluminum Topsider Truck Box

Buyers Single Latch Smooth Aluminum Topsider Truck Box mounts on top of the truck bed rails. Each truck box is crafted with .100 in. thick aluminum and dual, recessed drop doors. Your equipment is protected from weather and theft with a locking die-cast compression latch system. The box is built for long life with aircraft-grade cable lanyards, watertight continuous hinges, and 1/2 in. thick gasket sealing system. A corrosion and scratch-resistant gloss white powder-coated finish looks great year after year. Common uses Pick up trucks, flatbed trucks, and service & utility bodies.
$764.99 $901.99

Buyers Dual Latch Gloss White Smooth Aluminum Topsider Truck Toolbox

Buyers Smooth Gloss White Dual Latch Aluminum Topsider Truck Box mounts on top of the truck bed rails. Each truck box is crafted with .100 in. thick aluminum and dual, recessed drop doors. Your equipment is protected from weather and theft with a locking die-cast compression latch system. The box is built for long life with aircraft-grade cable lanyards, watertight continuous hinges, and 1/2 in. thick gasket sealing system. A corrosion and scratch-resistant gloss white powder-coated finish looks great year after year. Common uses Pick up trucks, flatbed trucks, and service & utility bodies.
$1,004.99 $1,039.99

Buyers Single Latch Black Smooth Aluminum Topsider Truck Toolbox

Buyers Black Smooth Single Latch Aluminum Topsider Truck Box mounts on top of the truck bed rails. Each truck box is crafted with .100 in. thick aluminum and dual, recessed drop doors. Your equipment is protected from weather and theft with a locking die-cast compression latch system. The box is built for long life with aircraft-grade cable lanyards, watertight continuous hinges, and 1/2 in. thick gasket sealing system. A corrosion and scratch-resistant gloss white powder-coated finish looks great year after year. Common uses Pick up trucks, flatbed trucks, and service & utility bodies.
$865.99 $966.99

Buyers Dual Latch Smooth Aluminum Topsider Truck Box

Buyers Dual Latch Smooth Aluminum Topsider Truck Box mounts on top of the truck bed rails. Each truck box is crafted with .100 in. thick aluminum and dual, recessed drop doors. Your equipment is protected from weather and theft with a locking die-cast compression latch system. The box is built for long life with aircraft-grade cable lanyards, watertight continuous hinges, and 1/2 in. thick gasket sealing system. A corrosion and scratch-resistant gloss white powder-coated finish looks great year after year. Common uses Pick up trucks, flatbed trucks, and service & utility bodies.
$941.99 $1,016.99

Buyers Single Latch Gloss White Smooth Aluminum Topsider Truck Toolbox

"Buyers Smooth Gloss White Single Latch Aluminum Topsider Truck Box mounts on top of the truck bed rails. Each truck box is crafted with .100 in. thick aluminum and dual, recessed drop doors. Your equipment is protected from weather and theft with a locking die-cast compression latch system. The box is built for long life with aircraft-grade cable lanyards, watertight continuous hinges, and 1/2 in. thick gasket sealing system. A corrosion and scratch-resistant gloss white powder-coated finish looks great year after year. Common uses Pick up trucks, flatbed trucks, and service & utility bodies.
$865.99 $966.99

Buyers Dual Latch Diamond Tread Aluminum Topsider Truck Toolbox

Buyers Products Diamond Tread Aluminum Topsider Truck Box provides a convenient and secure way to store your tools. The box mounts on your truck bed rails, keeping your tools easy to access and saving valuable storage space in the bed. These truck tool boxes are ideal for pick-up trucks, flatbed trucks, and service utility bodies.
$853.99 $931.99

Buyers Single Latch Diamond Tread Aluminum Topsider Truck Toolbox

Buyers Products Diamond Tread Aluminum Topsider Truck Box provides a convenient and secure way to store your tools. The box mounts on your truck bed rails, keeping your tools easy to access and saving valuable storage space in the bed. These truck tool boxes are ideal for pick-up trucks, flatbed trucks, and service utility bodies.
$676.99 $931.99

Buyers Single Latch Gloss Black Diamond Tread Aluminum Topsider Truck Box

Buyers Products Gloss Black Diamond Tread Aluminum Topsider Truck Box provides a convenient and secure way to store your tools. The box mounts on your truck bed rails, keeping your tools easy to access and saving valuable storage space in the bed. These truck tool boxes are ideal for pick-up trucks, flatbed trucks, and service utility bodies.
$778.99 $996.99

Buyers Single Latch Matte Black Diamond Tread Aluminum Topsider Truck Box

Buyers Products Matte Black Diamond Tread Aluminum Topsider Truck Box provides a convenient and secure way to store your tools. The box mounts on your truck bed rails, keeping your tools easy to access and saving valuable storage space in the bed. These truck tool boxes are ideal for pick-up trucks, flatbed trucks, and service utility bodies.
$778.99 $996.99

Buyers Matte Black Diamond Tread Alum Lo-Sider Truck Box

Access your tools directly from the truck side with this rail-mounted Lo-Sider truck box. The box mounts on your truck bed rails, keeping your tools easy to access and saving valuable storage space in the bed itself. These truck toolboxes are ideal for full-sized and compact pickups. Pair the Lo-Sider truck box with a Crossover, Saddle, or Gull Wing truck toolbox to maximize your truck bed storage.
$622.99 $931.99

Buyers Gloss Black Diamond Tread Alum Lo-Sider Truck Box

Access your tools directly from the truck side with this rail-mounted Lo-Sider truck box. The box mounts on your truck bed rails, keeping your tools easy to access and saving valuable storage space in the bed itself. These truck toolboxes are ideal for full-sized and compact pickups. Pair the Lo-Sider truck box with a Crossover, Saddle, or Gull Wing truck toolbox to maximize your truck bed storage.
$622.99 $931.99

Buyers Topsider Gloss Black Diamond Tread Aluminum HD Flatbed Contractor w/Lower Drawers

Buyers Products Gloss Black Diamond Tread Aluminum Heavy-Duty Flatbed Contractor Truck Boxes optimize the storage space on your flatbed, stake bed, and service body trucks with its extra deep and tall dimensions. Measuring 21” tall and 18” deep, these truck boxes offer two tiers of storage for your tools and equipment while still leaving ample room in your truck bed for larger cargo.
$1,620.99 $1,953.99

Buyers Topsiders Textured Matte Black Diamond Tread Aluminum HD Flatbed Contractor w/Lower Drawers

Buyers Products Textured Matte Black Diamond Tread Aluminum Heavy-Duty Flatbed Contractor Truck Boxes optimize the storage space on your flatbed, stake bed, and service body trucks with its extra deep and tall dimensions. Measuring 21” tall and 18” deep, these truck boxes offer two tiers of storage for your tools and equipment while still leaving ample room in your truck bed for larger cargo.
$1,620.99 $1,953.99

Buyers Compression Latch Topsider Diamond Tread Aluminum HD Flatbed Contractor w/Lower Drawers

Buyers Products Diamond Tread Aluminum Heavy-Duty Flatbed Contractor Truck Boxes optimize the storage space on your flatbed, stake bed, and service body trucks with its extra deep and tall dimensions. Measuring 21” tall and 18” deep, these truck boxes offer two tiers of storage for your tools and equipment while still leaving ample room in your truck bed for larger cargo.
$1,516.99 $1,875.99

Buyers Topsider Matte Black Diamond Tread Aluminum HD Flatbed Contractor w/Lower Door

Buyers Products Textured Matte Black Diamond Tread Aluminum Heavy-Duty Flatbed Contractor Truck Boxes optimize the storage space on your flatbed, stake bed, and service body trucks with its extra deep and tall dimensions. Measuring 21” tall and 18” deep, these truck boxes offer two tiers of storage for your tools and equipment while still leaving ample room in your truck bed for larger cargo.
$1,315.99 $1,704.99

Buyers Topsider Aluminum HD Flatbed Contractor w/Lower Door

Buyers Products Gloss Black Diamond Tread Aluminum Heavy-Duty Flatbed Contractor Truck Boxes optimize the storage space on your flatbed, stake bed, and service body trucks with its extra deep and tall dimensions. Measuring 21” tall and 18” deep, these truck boxes offer two tiers of storage for your tools and equipment while still leaving ample room in your truck bed for larger cargo.
$1,315.99 $1,704.99

Buyers Topsider Diamond Tread Aluminum HD Flatbed Contractor w/Lower Door

Buyers Products Diamond Tread Aluminum Heavy-Duty Flatbed Contractor Truck Boxes optimize the storage space on your flatbed, stake bed, and service body trucks with their extra deep and tall dimensions. Measuring 21” tall and 18” deep, these truck boxes offer two storage tiers for your tools and equipment while leaving ample room in your truck bed for oversized cargo.
$1,197.99 $1,600.99

Phoenix High Gloss Black Powder Coated Steel TopSide Mount ToolBox

Phoenix USA Ultimate Toolboxes are constructed of 13 gauge steel. Steel topside mount toolbox with steel rolled door features water-resistant door gaskets and stainless steel latches.
$317.99
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Topsider Toolboxes Buying Guide

When it comes to maximizing storage space on your truck, topsider toolboxes offer one of the most efficient and versatile solutions. Mounted above the bed rails, these boxes free up valuable bed space while keeping tools, equipment, and gear protected from the elements. With easy side and top access, a top sider toolbox is an ideal choice for contractors, tow operators, and utility workers who need reliable storage on the go.

Why Choose a Topsider Toolbox?

A top sider toolbox, sometimes called a top mount side toolbox, is designed for both durability and convenience. Its elevated design not only keeps tools safe from road debris and moisture, but also allows you to access gear without climbing into the truck bed. Many models include weather-resistant seals, reinforced doors, and multiple latching systems for added security. Some even feature drawer-style configurations, making organization easier for smaller tools and fasteners.

Top Brands in Topsider Toolboxes

Best-Selling Models

Some of the most popular topsider toolboxes available include:

  • RC Industries P Series Aluminum Toolbox w/Stainless Steel Door – Rugged construction with corrosion resistance.
  • Buyers Black Diamond Tread Aluminum Topsider Contractor Truck Box – Stylish, durable, and built for demanding work environments.
  • Buyers T-Handle Diamond Tread Aluminum Contractor Truck Box – Easy-to-use latch system with secure storage.
  • Buyers Single Latch Smooth Aluminum Topsider Truck Box – Clean look with reliable single-latch access.

Toolbox Parts and Accessories

For replacement locks, latches, gas springs, and mounting hardware, explore our full line of Toolbox Parts. Having the right accessories ensures your topsider toolbox stays secure and functional over time.

Shopping Guide: What to Consider Before Buying

When selecting the right top side truck toolbox, think about:

  • Material Options – Aluminum provides a lightweight, corrosion-resistant choice, while steel offers maximum strength.
  • Door Configurations – Choose between single-latch, dual-latch, or drawer-equipped designs based on your workflow.
  • Finish – Diamond tread adds rugged styling, while smooth finishes create a clean, professional look.
  • Size and Fit – Available in multiple lengths and depths to match your truck and storage needs.
  • Accessibility – Side and top opening toolbox designs make it easier to grab tools quickly without climbing into the bed.

FAQ: Topsider Toolboxes

What is a topsider toolbox used for?
A topsider toolbox mounts above the bed rails of a truck to store tools, towing gear, and equipment while freeing up bed space.

Are topsider toolboxes weatherproof?
Yes, most models include weather-resistant seals and reinforced doors to protect tools from rain, snow, and road debris.

What materials are available for topsider toolboxes?
Common options include lightweight aluminum, heavy-duty steel, and powder-coated finishes for added durability.

Do topsider toolboxes come in different sizes and styles?
Yes, they are available in various lengths, depths, finishes, and door configurations including single latch, dual latch, and drawer models.

Can I get replacement parts for my topsider toolbox?
Absolutely. We stock Toolbox Parts including latches, locks, and gas springs for easy maintenance.