RKI Accessory Box Side

RKI Accessory Box Side: Purpose-Built Components for Working Trucks

When a truck side box takes a beating day after day on the job site, the hardware, seals, and mounting hardware that hold it together matter just as much as the box itself. RKI — short for Rawson Koenig Inc. — has understood this for more than four decades of building commercial-grade truck equipment. Their line of Accessory Box Side products reflects the same philosophy that defines every piece of equipment they manufacture: nothing should be a throwaway item.

What Are Accessory Box Side Products?

Accessory Box Side components are the individual parts that complete, secure, and maintain a truck side tool box. This category encompasses items such as replacement latches, cylinders and key sets, mounting brackets, weather seals, and tool trays designed to fit RKI's S-Series, SLP-Series, US-Series, and other side-mount box families. Rather than replacing an entire box when a single component wears out, these accessories allow fleet managers, contractors, and owner-operators to restore full function quickly and cost-effectively.

Why RKI Stands Out in Side Box Accessories

All RKI boxes and accessories are built with industry-leading coatings, replaceable gaskets, and replaceable hardware — a deliberate design choice that sets them apart from manufacturers who treat trim components as afterthoughts. Designed, engineered, and fabricated in the United States, RKI has built commercial truck equipment for fleets, municipalities, and contractors for more than four decades.

Heavy-gauge steel and aluminum are specified for continuous commercial use, selected to withstand daily operation in demanding field environments. That same standard extends to every accessory: a replacement latch or seal channel is engineered to the same tolerance as the original component on the box.

Key Features of RKI Side Box Accessories

• Replaceable Hardware System: Industry-leading coatings, replaceable gaskets, and replaceable hardware mean the box can be serviced rather than scrapped.
• Seal Engineering: RKI side box designs incorporate a drip rail, channel drain, full premiere seal support channel, and a knife edge to compress the door seal, producing no seal interruption at the door latch — accessories are built to maintain this watertight standard.
• Mounting Bracket Inclusion: US-Series truck boxes have mounting brackets included , and replacement bracket sets are available to keep flat weld-on or bolt-on installations secure over the long haul.
• Material Choices: Aluminum side boxes use diamond treadplate aluminum, while steel truck bed boxes are crafted of at least 14-gauge steel , and the accessories are matched to each material accordingly.
• Optional Tool Trays: In addition to pickup tool boxes, accessories include cylinders and keys, latches, and tool trays to maximize organization inside the box.

Built for Commercial Demands

Standardized equipment designed for large-scale fleets, public works, and long-term vehicle programs means RKI accessories are consistent from unit to unit — a critical advantage for fleet managers who need interchangeable parts across dozens of vehicles. RKI, Inc. delivers rugged truck storage, service bodies, and lifting equipment for commercial fleets, and offers a standout limited lifetime warranty that backs both the boxes and their associated accessories.

Whether you are outfitting a new side box or bringing an older one back to working condition, RKI's Accessory Box Side lineup provides the components needed to keep your storage system performing as intended — no compromise, no shortcuts.