6000 lb Tandem Axle Kit (12K Capacity) 95/80 – Equipment Trailer Master Kit

Build a complete 7′ x 20′ heavy-duty equipment trailer with this comprehensive 12,000 lb Equipment Trailer Master Kit. Designed around two 6,000 lb electric brake axles with a 95″ hub face / 80″ spring center, this package includes the trailer blueprints, suspension, tires and wheels, tandem fenders, 2-5/16″ coupler, 12K drop-leg jack, lighting, wiring, breakaway system, ramp hardware, D-rings, stake pockets, and other essential fabrication components.

With electric brakes on both axles, 225-series tires, heavy-duty safety chains, eight D-rings, and a 12,000 lb jack, this Master Kit is built around the needs of a serious equipment trailer project.

What’s Included

Blueprints

• (1) Equipment Trailer 7′ x 20′ Blueprint Package

Axles & Suspension

• (2) 6,000 lb Electric Brake Axles – 95″ Hub Face / 80″ Spring Center
• Double Eye Leaf Springs
• U-Bolt Mounting Hardware
• (1) Tandem Axle Hanger Kit

Tires, Wheels & Fenders

• (4) ST225/75R15 Trailer Tires & Wheels – 6 Lug
• (24) Lug Nuts
• (2) Smooth Rolled Tandem Axle Fenders
• (2) Tandem Fender Backs
• (2) Fender Steps – LH/RH with Holes
• (2) Fender Steps – LH/RH without Holes

Coupler, Jack & Safety Equipment

• (1) 2-5/16″ Trailer Coupler
• (1) 12,000 lb Drop-Leg Trailer Jack
• (1) Jack Plate
• (2) 1/4″ x 30″ Grade 70 Safety Chains with 12,600 lb Forged Hooks
• (2) Chain Retainers
• (1) Breakaway Kit

Ramp Hardware

• (4) Ramp Pin Receivers
• (2) Ramp Pin Washers
• (4) Ramp Pin Retainers
• (2) Long Pin Retainers
• (2) Short Pin Retainers
• (4) Linch Pins

Cargo & Deck Hardware

• (8) D-Rings
• (12) Stake Pockets

Frame & Fabrication Components

• (1) Transition Plate
• (2) Joining Plates
• (2) Indicator Tabs

Trailer Wiring & Lighting

• (1) 7-Way Trailer Plug
• (50′) Color-Coded Trailer Wire
• (1) 12V LED Left / Right Tail Light Set
• (1) 3-Light LED Identification Light Bar
• (4) 3/4″ Amber LED Side Marker Lights
• (1) License Plate Bracket
• (2) Light Brackets

Visibility Components

• (6) 2″ x 12″ Conspicuity Tape Strips
• (2) 1″ x 12″ Conspicuity Tape Strips

Kit Specifications

Features & Benefits

Complete 7′ x 20′ Equipment Trailer Build Package

This Master Kit combines the major mechanical, braking, electrical, cargo, and fabrication components needed to build a 7′ x 20′ heavy-duty equipment trailer.

12,000 lb Combined Axle Capacity

Two 6,000 lb axles provide a combined axle capacity of 12,000 lbs, creating a strong running gear foundation for equipment hauling and other demanding trailer applications.

Electric Brakes on Both Axles

Both axles are equipped with electric brakes, providing increased stopping control when connected to a properly equipped tow vehicle and trailer brake controller.

95/80 Heavy-Duty Axle Configuration

Both axles feature a 95-inch hub face and 80-inch spring center, providing the wide running gear configuration used for this 7-foot-wide equipment trailer build.

ST225/75R15 6-Lug Tire Package

Four ST225/75R15 6-lug trailer tire and wheel assemblies are included along with 24 lug nuts, providing a wheel package matched to the heavier 6K axle setup.

12K Drop-Leg Jack

The included 12,000 lb drop-leg jack provides increased support for the heavier tongue weights typically associated with equipment trailers and makes hookup and positioning easier.

Heavy-Duty Safety Chains

Two 1/4″ x 30″ Grade 70 safety chains with 12,600 lb forged hooks and chain retainers provide strong secondary trailer attachment points.

Complete Ramp Hardware Package

Ramp pin receivers, washers, retainers, long and short pin retainers, and linch pins are included to provide the hardware needed for the trailer’s loading ramp system.

Eight D-Ring Tie-Down Points

Eight D-rings provide multiple heavy-duty cargo securement locations for properly restraining equipment, machinery, and other loads.

Twelve Stake Pockets

Twelve stake pockets add versatility to the trailer deck and can support removable side systems and other custom hauling configurations.

Electric Brake Wiring & Breakaway System

A 7-way trailer plug, 50 feet of color-coded wiring, electric brakes on both axles, and a breakaway kit provide the primary components required for the trailer braking and electrical systems.

Complete LED Lighting Package

LED tail lights, four amber side markers, a three-light identification bar, license plate bracket, and light mounting brackets provide the main components needed for the trailer lighting system.

Frame & Fender Hardware

The transition plate, joining plates, tandem fenders, fender backs, fender steps, and indicator tabs provide key components for completing the body and deck around the tandem axle assembly.

Common Applications

• 7′ x 20′ Equipment Trailers
• Skid Steer Trailers
• Compact Tractor Trailers
• Mini Excavator Trailers
• Construction Equipment Trailers
• Farm & Agricultural Trailers
• Landscape Equipment Trailers
• Machinery Transport Trailers
• Heavy-Duty Utility Trailers
• Contractor Trailers
• DIY Equipment Trailer Builds
• Custom Trailer Fabrication

Why Choose an Equipment Trailer Master Kit?

A heavy-duty equipment trailer requires far more than axles and tires. Proper braking, cargo securement, ramp hardware, wiring, lighting, towing components, and deck hardware all have to come together as part of the finished build.

This Master Kit simplifies that process by combining the blueprints, dual electric brake axles, suspension, tires, fenders, 12K jack, coupler, safety chains, electrical components, ramp hardware, D-rings, stake pockets, and fabrication pieces into one coordinated package.

That means less time sourcing individual components and a clearer path from raw steel to a completed 7′ x 20′ equipment trailer.

Important Fitment & Build Information

Please verify all measurements, capacities, and component requirements before beginning your trailer build.

• Trailer Application: 7′ x 20′ Equipment Trailer
• Hub Face: 95″
• Spring Center: 80″
• Individual Axle Capacity: 6,000 lbs
• Combined Axle Capacity: 12,000 lbs
• Axle Setup: 2 Electric Brake Axles
• Tire Size: ST225/75R15
• Wheel Pattern: 6 Lug
• Coupler Size: 2-5/16″
• Jack: 12,000 lb Drop-Leg
• Electrical Connection: 7-Way
• Breakaway Kit: Included
• D-Rings: 8 Included
• Stake Pockets: 12 Included

The 12,000 lb combined axle rating does not automatically mean the completed trailer is rated for 12,000 lbs of payload. Final trailer capacity and legal GVWR depend on the completed trailer design and the lowest-rated component in the assembly, including the frame, suspension, tires, wheels, coupler, brakes, safety equipment, and other hardware.

Need help with your equipment trailer build or selecting the correct kit? Contact Highway 96 Trailers and our team can help you choose the right setup for your project.