12K Tandem Hydraulic Disc Brake Trailer Kit – Complete 24,000 lb Trailer Parts Kit

If you are building or upgrading a heavy-duty trailer, this 12K Tandem Hydraulic Disc Brake Trailer Kit gives you everything in one package. Instead of sourcing parts from different places, this complete kit brings together axles, suspension, wheels, and full trailer components so you can get to work faster.

Built for strength and reliability, this setup is ideal for demanding applications where performance and durability matter.

Why Choose This 12K Tandem Trailer Kit

• Complete heavy-duty trailer build package
• Hydraulic disc brake axles for stronger braking performance
• Pre-matched components for proper fit and function
• Designed for high-capacity trailer applications
• Saves time and simplifies installation

What’s Included in the 12K Complete Trailer Kit

Axles & Suspension

• (2) 12K Hydraulic Disc Brake Axles – Grease Bath
• (4) 5-Leaf Slipper Springs – 12,000 lb Capacity
• (2) 12K U-Bolt Kits
• (1) Slipper Tandem Hanger Kit

Wheels & Tires

• (8) 16" 235/80 R16 10-Ply Radial Dual Tire and Wheel Assemblies
• Wheel Finish: Silver / Gray

Coupler & Jack

• (1) 25K Gooseneck Coupler – Adjustable Round 2 5/16"
• (2) 12K Drop Leg Trailer Jacks – Front Pin Side Wind
• (2) Ram Jack Handles

Lighting & Wiring

• (4) Red 6" Oval LED Stop/Turn/Tail Lights
• (2) Amber 6" Oval LED Lights
• (1) Sealed ID Light Bar – 3 Red Lights
• (6) Flush Mount Grommets for 6" Oval Lights
• (6) 3-Prong Light Pigtails – 10"
• (1) Rectangular License Plate Light
• (4) 3/4" Amber Side Marker Lights
• (2) 3/4" Red Side Marker Lights
• 46 ft – 6-Way 14-Gauge Cable
• (1) 7-Way Plug

Safety & Braking

• (1) 12V Trailer Breakaway Kit
• (1) Breakaway Switch
• (50) Reflective DOT Tape – 18" Strips
• (2) Safety Chains – 3/8" x 39" with Clevis Hook (27.4K Capacity, G70)

Axle Specifications & Features

• Capacity: 12,000 lb per axle (24,000 lb total)
• Brake Type: Hydraulic Disc Brake
• Lubrication: Grease Bath
• Bolt Pattern: 8x6.5

Key Features

• Axles come fully assembled with high-temperature grease
• Underslung design with spring seats welded on the bottom
• Lower ride height for improved stability
• High-strength 5" steel axle tube construction
• Designed for consistent performance under heavy loads

Common Applications

This 12K tandem axle kit is built for demanding trailer use, including:

• Flatbed trailers
• Car haulers
• Gooseneck trailers
• Lawn and landscape trailers
• Dump trailers

Custom Trailer Solutions

Need a custom setup for your trailer build? Call  (936) 289 3191 and our trailer parts experts will help you get the right configuration for your exact needs.