Unit details

Spartan Cargo 6×12 Tandem Axle Custom Enclosed Cargo Trailer – Black Poly w/ Black Trim Package (+6″ Height & Floor D-Rings)

• Manufacturer: Spartan Cargo Trailers (Alma, GA)

• Configuration: 6′ x 12′ Tandem Axle (6×12 TA Base Build)

• Exterior Finish: Black Poly (.080 Semi-Screwless Siding) with Black Trim Package (Murdered-Out Blackout)

• Upgraded Interior Height: 84″ (7’0″ Ceiling w/ +6″ Additional Height)

• Axles & Running Gear: Dual 3,500 lb Leaf Spring Electric Brake Axles on Upgraded Black Mod Wheels

• Tie-Down Package: 4 Floor-Mounted D-Rings

• Ceiling Protection: Thermoply Ceiling Liner

A stealth, full blackout commercial-grade hauler engineered for contractors, mobile detailers, tradesmen, and powersports haulers who demand severe-duty tandem-axle stability in an agile 6-wide footprint. Wrapped in heavy-gauge Black Poly .080 composite skin hung semi-screwless, this trailer delivers an ultra-smooth, wave-free exterior that eliminates highway panel flutter and resists denting under harsh daily road abuse.

This custom build is upgraded to a full murdered-out Blackout configuration, combining the Black Poly skin with the complete Black Trim Package (black ATP stone guard, black powder-coated perimeter extrusions, black side door trim, and Black ATP fenders) matched to upgraded Black Mod wheels with commercial radials. With an upgraded +6″ of additional interior height (delivering an expansive 7’0″ walk-in ceiling), four factory floor-mounted D-rings, a heat-deflecting Thermoply ceiling liner, and a metal hold-back latch, this hauler is dialed in for immediate, secure jobsite operation.

Key Specifications & Custom Upgrades

• Tubular Skeleton & 4″ Tube Chassis:

  • Mainframe: 4″ structural steel tube main rails backed by full-height C-channel crossmembers.

  • Floor Crossmembers: 16″ on-center floor crossmember spacing for rigid deck support under rolling machinery and concentrated point loads.

  • Wall Framing: 16″ on-center structural steel tubing sidewall posts (no lightweight hat posts or Z-bars).

  • Roof Bows: 16″ on-center structural steel tubing roof bows supporting a seamless flat Galvalume roof.

• Upgraded +6″ Interior Height (7’0″ Stand-Up Ceiling): Expands the interior ceiling from the standard 78″ to a full 84″ (7’0″) of walk-in height, allowing duck-free stand-up movement, increased vertical shelving capacity, and taller loading clearance for UTVs, commercial mowers, and tall equipment.

• Black Poly .080 Skin & Full Black Trim Package:

  • Exterior Skin: Heavy-gauge Black Poly .080 exterior metal hung semi-screwless for maximum impact resistance, thermal stability, and a smooth canvas ready for custom branding.

  • Black Trim Package: Includes a Black ATP front stone guard, black side door trim, fully black powder-coated perimeter extrusions, and rugged Black ATP fenders.

• Tandem 3.5K Electric Brake Running Gear: Dual 3,500 lb leaf spring axles with four-wheel electric brakes, emergency breakaway system, and a 7-way RV-style plug for balanced highway tracking and confident stopping power.

• Upgraded Black Mod Wheels & Radial Tires: ST 15″ radial tires mounted on upgraded Black Mod steel wheels (replacing standard gray mod wheels) for extended highway tread life and a cohesive blackout stance.

• Reinforced Cargo Tie-Down Package: Four (4) factory floor-mounted D-rings strategically placed to securely anchor commercial mowers, ATVs, UTVs, or rolling tool cabinets during transit.

• Climate & Interior Construction:

  • Upgraded Thermoply ceiling liner to reflect radiant solar heat and keep cabin interior temperatures controlled.

  • 3/4″ Stable Deck Plus engineered flooring paired with 3/8″ Stable Deck Plus interior sidewalls for exceptional moisture, gouge, and scuff resistance.

• Doors, Access & Heavy-Duty Hardware:

  • Rear Loading: Heavy-duty spring-assist rear ramp door with a 16″ transition extension flap for smooth rolling ingress and egress.

  • Curbside Access: Oversized 36″ x 74″ side door with flush lock and safety chain, upgraded with a heavy-duty metal hold-back latch to prevent wind damage when loading on the jobsite.

• Exterior Aerodynamics, Lighting & Hitch:

  • Aerodynamic V-nose profile capped with an anodized nose cap to cut highway wind drag.

  • 2-5/16″ A-frame ball coupler paired with a 2,000 lb A-frame tongue jack with sand foot.

  • Flow-through plastic sidewall vents for continuous air exchange.

  • 12-volt interior LED ceiling dome light and complete full-exterior LED clearance lighting with integrated tag bracket and LED tag light.

Built with heavy-duty structural steel tubing, upgraded 7’0″ interior height, factory floor D-rings, and complete blackout styling. Inquire today to check lot availability, apply for financing, or arrange direct delivery.

Contact us for a complete list of features and available options for this stock number! Description may contain factory features and specifications which are not available and are subject to change.