Parts of Rear Suspension in a Charger: A Complete Guide

The rear suspension of a Dodge Charger plays a critical role in ride comfort, handling, and tire wear. Whether you drive a V6, HEMI V8, or a high-performance SRT model, the basic architecture is similar: a multi-link independent rear suspension. Understanding the parts can help you diagnose problems, plan maintenance, or upgrade performance. Below is a breakdown of each major component and what it does.

1. Control Arms

The rear suspension uses multiple control arms to locate the axle and control wheel movement. In a Charger, you’ll find upper and lower control arms on each side.

Upper Control Arms

These arms connect the top of the knuckle to the chassis. They control camber and toe angles during suspension travel. On older Charger models (pre-2011), upper arms are common wear items due to ball joint failure. Later models use a more robust design, but bushings can still wear out.

Lower Control Arms

Lower arms are larger and bear more load. They attach to the bottom of the knuckle and connect to the subframe. They control the wheel’s forward/backward movement and help maintain the correct caster angle. A worn lower control arm bushing can cause clunking noises and vague steering.

2. Lateral Links (Track Bar / Toe Links)

To keep the rear axle centered side-to-side, the Charger uses a lateral link, often called a track bar. In independent rear suspensions, there are separate toe links that adjust rear toe. These bars have bushings on each end that degrade over time, leading to wandering rear end and uneven tire wear.

3. Springs

The Charger uses coil springs on each rear corner. They support the vehicle’s weight and absorb road impacts. Over time, springs can sag, especially if the car is frequently loaded or driven hard. Sagging springs reduce ride height, increase bottoming out, and accelerate wear on shocks and bushings. Upgrading to heavier-duty springs is common for towing or performance driving.

4. Shock Absorbers (Dampers)

Shocks control the motion of the springs. In the Charger, they are mounted vertically between the lower control arm and the chassis. Standard shocks provide a balance of comfort and control. SRT models use adaptive dampers that adjust stiffness based on driving mode. Worn shocks cause excessive bouncing, poor handling, and longer stopping distances.

5. Stabilizer Bar (Sway Bar)

The rear stabilizer bar connects both sides of the suspension to reduce body roll during cornering. It attaches to the lower control arms via end links. End links have ball joints that wear out, causing clunking noises over bumps. A thicker aftermarket sway bar can reduce body roll for better cornering, but may stiffen the ride.

6. Knuckles & Hub Assemblies

The knuckle is the central part that the wheel hub bolts to. It connects to the control arms, tie rods, and shock. The hub assembly contains the wheel bearings. In rear-wheel-drive Chargers, the rear hubs are not driven (unless all-wheel drive), but they still support the vehicle’s weight and allow smooth rotation. A failing wheel bearing makes a humming noise that changes with speed.

7. Subframe & Bushings

The entire rear suspension is mounted to a rear subframe, which is bolted to the body. Subframe bushings isolate noise and vibration. On older Chargers, these bushings can crack and cause a loose rear-end feel. Polyurethane replacement bushings are available for firmer handling.

8. Rear Toe & Camber Adjustments

Many Charger rear suspensions have adjustment points for toe and camber. Toe links often have eccentric bolts or adjustable sleeves. Camber is set by the upper control arm mounting slots. Proper alignment is essential even after replacing individual parts. A misaligned rear end leads to rapid tire wear and poor straight-line stability.

Common Issues & Replacement Tips

• Ball joints: Upper control arm ball joints are a known weak spot. Replace them when they develop play.
• Bushings: All rubber bushings age and crack. Control arm bushings and subframe bushings are common replacements.
• Shocks: Leaking shocks or fluid stains on the shock body indicate they need replacement.
• Springs: Look for broken coils or uneven ride height. Replace in pairs (both rear) to maintain balance.
• Alignment: Always get a four-wheel alignment after replacing any suspension component.

Upgrading the Rear Suspension

For Charger owners looking to improve handling, popular upgrades include:

• Adjustable upper control arms – allow fine-tuning of camber.
• Heavy-duty sway bar – reduces body roll.
• Lowering springs or coilovers – lower the center of gravity.
• Polyurethane bushings – reduce flex and improve response.

Stick to components from reputable brands like Moog, TRW, or Mopar for street use. For track use, consider race-specific parts.

Practical Recommendation

If you’re replacing worn suspension parts on your Charger, start by inspecting the lower control arm bushings and upper ball joints—they fail most often. Choose OE-quality parts for daily driving. For a performance car, upgrade to adjustable upper arms and firmer bushings. Always replace shocks in pairs and get a professional alignment afterward. Avoid cheap aftermarket parts that may fit poorly or wear quickly. If you’re unsure, consult a certified mechanic who knows Chrysler/Dodge suspensions.