3500 lb Tandem Axle Kit (7K Capacity) 95/80 – Car Hauler Master Kit

Build a complete 7′ x 20′ tandem axle car hauler with this comprehensive 7,000 lb Car Hauler Master Kit. Designed around two 3,500 lb axles with a 95″ hub face / 80″ spring center, this package combines one idler axle and one electric brake axle with the trailer blueprints, suspension, tires and wheels, tandem fenders, ramps, coupler, jack, lighting, wiring, breakaway equipment, D-rings, and key fabrication hardware.

This Master Kit is designed specifically around a 7′ x 20′ car hauler build, giving you the major running gear, loading, electrical, towing, and safety components needed to create a dependable vehicle transport trailer.

What’s Included

Blueprints

• (1) Car Hauler 7′ x 20′ Blueprint Package

Axles & Suspension

• (1) 3,500 lb Idler Axle – 95″ Hub Face / 80″ Spring Center
• (1) 3,500 lb Electric Brake Axle – 95″ Hub Face / 80″ Spring Center
• Double Eye Leaf Springs
• U-Bolt Mounting Hardware
• (1) Tandem Axle Hanger Kit

Tires, Wheels & Fenders

• (4) ST205/75R15 Trailer Tires & Wheels – 5 Lug
• (20) Lug Nuts
• (2) Smooth Rolled Tandem Axle Fenders
• (2) Tandem Fender Backs
• (2) Fender Steps with Holes – LH/RH
• (2) Fender Steps without Holes – LH/RH

Coupler, Jack & Safety Equipment

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

Loading & Cargo Hardware

• (2) Car Hauler Ramps
• (2) Hitch Pins
• (4) Pin Retainers
• (4) D-Rings

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′ Car Hauler Build Package

This Master Kit brings together the major components needed for a 7′ x 20′ vehicle transport trailer, including the running gear, loading ramps, electrical system, braking components, towing hardware, cargo securement points, and fabrication hardware.

7,000 lb Combined Axle Capacity

Two 3,500 lb axles provide a combined axle capacity of 7,000 lbs, creating a solid foundation for a tandem axle car hauler build.

Idler & Electric Brake Axle Combination

The kit includes one idler axle and one electric brake axle, providing trailer braking capability when connected to a properly equipped tow vehicle and brake controller.

95/80 Axle Configuration

Both axles feature a 95-inch hub face and 80-inch spring center, providing the wider axle configuration required for the 7-foot-wide car hauler platform.

Car Hauler Ramps Included

Two loading ramps are included to provide vehicle access to the trailer deck. Hitch pins and pin retainers are also included as part of the ramp mounting and retention system.

Four D-Ring Tie-Down Points

Four heavy-duty D-rings provide dedicated cargo securement locations for properly restraining vehicles and other loads during transport.

Complete Tandem Suspension System

The axles, springs, U-bolt hardware, and tandem axle hanger kit provide the core suspension components needed to support the full tandem axle assembly.

Four ST205/75R15 Tires & Wheels

Four ST205/75R15 5-lug trailer tire and wheel assemblies are included along with the required lug nuts, giving you a complete wheel package for the trailer.

Tandem Fenders & Fender Steps

Smooth rolled tandem fenders, fender backs, and left/right fender steps help provide proper wheel coverage and easier access around the trailer deck.

2-5/16″ Trailer Coupler

The included 2-5/16″ coupler provides a heavier-duty towing connection appropriate for this car hauler configuration.

Electric Brake Wiring & Breakaway System

A 7-way trailer plug, 50 feet of color-coded wiring, electric brake axle, and breakaway kit provide the primary components needed for the trailer braking system.

Complete LED Lighting Package

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

Common Applications

• 7′ x 20′ Car Haulers
• Vehicle Transport Trailers
• Automotive Project Trailers
• Race Car Trailers
• Utility Car Haulers
• ATV & UTV Haulers
• Small Equipment Transport
• Farm & Property Equipment Hauling
• DIY Car Hauler Builds
• Custom Trailer Fabrication

Why Choose a Car Hauler Master Kit?

A car hauler requires more than standard trailer running gear. In addition to the axles, suspension, wheels, and towing hardware, you also need ramps, cargo securement points, electric braking components, wiring, lighting, and specialized fabrication pieces.

This Master Kit combines those major systems into one coordinated package, giving you a much clearer path from raw steel to a completed 7′ x 20′ car hauler.

Important Fitment & Build Information

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

• Trailer Application: 7′ x 20′ Car Hauler
• Hub Face: 95″
• Spring Center: 80″
• Individual Axle Capacity: 3,500 lbs
• Combined Axle Capacity: 7,000 lbs
• Axle Setup: 1 Idler + 1 Electric Brake
• Tire Size: ST205/75R15
• Coupler Size: 2-5/16″
• Electrical Connection: 7-Way
• Breakaway Kit: Included
• Ramps: 2 Included
• D-Rings: 4 Included

The 7,000 lb combined axle rating does not automatically mean the completed trailer is rated for 7,000 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, and other hardware.

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