RideTech HD Universal Parallel 4-Link Kit

RideTech HD Universal Parallel 4-Link Kit For 3"/3.5"/4" Axle Housings

Upgrade your heavy-duty truck with the RideTech HD Universal Parallel 4-Link System built for serious strength and load control. Designed for 3-inch, 3.5-inch, and 4-inch diameter rear axle housings, this weld-on kit replaces factory leaf springs with a fully adjustable air ride setup that delivers improved handling, better traction, and a smoother ride.

Rated to support up to 7,000 lbs, this system is ideal for 3/4-ton and 1-ton trucks that need to stay comfortable when unloaded and stable when towing or hauling. Whether you're building a lowered street truck or a heavy-duty hauler, this HD 4-Link adapts to your load and driving style.

Application

Universal weld-on 4-link rear suspension system

Designed for 3-inch, 3.5-inch, or 4-inch diameter rear axle housings

Commonly used on 3/4-ton and 1-ton trucks

Professional installation strongly recommended. Welding and fabrication required.

Features

Heavy-duty parallel 4-link design for strength and stability

Handles varying loads up to 7,000 lbs

1.5-inch x .188-inch wall DOM link bars for durability

R-Joint XL rod ends for improved articulation and reduced bind

Includes Firestone 2107 air springs for reliable load support

.250-inch thick steel brackets for maximum strength

2-inch x .250-inch wall bridge tube for structural integrity

Ideal for lowered heavy-duty truck applications

What’s Included

Two 1.5-inch diameter 4-link bars with R-Joint XL rod ends

Firestone 2107 air springs

Air spring mounting brackets

Bridge assembly and mounting structure

Shocks and panhard bar kit sold separately

Specifications

Axle Compatibility 3-inch 3.5-inch or 4-inch diameter

Link Bar Diameter 1.5 inches

Link Wall Thickness .188-inch DOM

Bridge Tubing 2-inch diameter .250-inch wall

Bracket Thickness .250-inch plate steel

Air Spring Model Firestone 2107

Load Capacity Up to 7,000 lbs

Free shipping to the lower 48 states