Stop Rear Axle Wander Under Load And Towing
The factory rubber bushings in the Ram 1500 upper trailing arm compress under heavy towing and load, allowing the rear axle to shift position and reducing rear end stability. This Whiteline KTA388 upper trailing arm kit replaces the factory arm with a stronger design and firmer bushings that keep the axle located precisely, improving rear end stability when towing or hauling.
Key Features
- Direct replacement upper trailing arm for the Ram 1500
- Firmer bushings reduce axle shift under load and towing
- Improves rear end stability and tracking
- Built stronger than the factory stamped steel arm
- KTA388 uses the factory mounting points for a direct fit
Fitment
| Year Range | Make | Model |
|---|---|---|
| 2009-2024 | Ram | 1500 |
Specifications
| Detail | Value |
|---|---|
| Manufacturer | Whiteline |
| MPN | KTA388 |
| UPC | 9319924478057 |
| Position | Rear Upper Trailing Arm |
| Part Type | Control Arm |
What’s Included
- 1 upper trailing arm with bushings
About Whiteline
Whiteline builds replacement suspension arms with firmer bushings and stronger construction than factory stamped steel components. Their trailing arm solutions keep the rear axle located precisely for improved stability under load.
FAQ
What is the KTA388?
This part is a Whiteline upper trailing arm for the Ram 1500 built with firmer bushings to reduce axle shift under load.
Why does my Ram 1500 wander when towing?
The factory rubber bushings in the upper trailing arm compress under heavy load, allowing the rear axle to shift and reducing stability.
Will this improve towing stability?
Yes, the firmer bushings in this trailing arm keep the rear axle located precisely, which improves stability when towing or hauling.
Is this a direct bolt in replacement?
Yes, this trailing arm uses the factory mounting points for a direct bolt in installation.
Does this replace one arm or both?
This part is sold as a single upper trailing arm. Check your vehicle to confirm how many arms need replacement.
Will this work with a lifted Ram 1500?
Yes, this trailing arm is compatible with lifted and stock ride height applications.
Do I need an alignment after installing this arm?
Yes, a rear alignment check is recommended after replacing any trailing arm component.
Will this reduce rear end noise from worn bushings?
Yes, replacing worn factory bushings with the firmer Whiteline bushings in the KTA388 typically reduces noise from bushing play.
Install Instructions
- Raise and safely support the rear of the vehicle on jack stands
- Support the rear axle and remove the factory upper trailing arm mounting bolts
- Remove the factory upper trailing arm
- Install the Whiteline KTA388 upper trailing arm and torque all fasteners to factory specification
- Lower the vehicle and check rear axle alignment
