2021-2024 Ram TRX Fabricated Lower Control Arms - Stock Length

• (1) Right side fabricated lower arm with FK uniballs installed
• (1) Left side fabricated lower arm with FK uniballs installed
• (1) Kit of 17-4 stainless spacers for the uniballs at the wheel and the frame
• (2) 12-point 5/8" bolts for the lower uniball at the spindle

The factory lower arm mounting bolts at the frame are reused. See Installation for the upgraded bolt option.

The lower control arm takes most of the load the front wheel sees, from landings to square-edge hits. A fabricated arm puts material where those loads go, and uniball pivots locate the wheel without the give of a rubber bushing, so the front end stays where it was set.

These arms keep stock length, so they work with the factory spindle and the factory coil-over, or with any aftermarket stock-replacement coil-over. That gives you strength and control now, and room to grow into a bypass shock later.

• 4130 construction, MIG welded and fixture built for consistent fit and quality.
• 1.5" uniball at the spindle and 1" uniballs at the frame, all FK, for strength and control.
• Steering stops welded into the core of the arm, with geometry matched to the spindle to protect the steering rack.
• 17-4 stainless mounting spacers, machined for durability.
• Built-in bypass shock mount for adding a 3" secondary bypass shock.
• Powder coat finish to keep the arms looking good long-term.

The arms have a lower mount built in for a 3" secondary bypass shock. Running one also requires an upper shock mount kit and our proprietary FMI special-layout 3" bypass shock. Contact FMI for the current status of the TRX upper shock mount before planning around it.

Fits the 2021–2024 Ram TRX. Stock length, designed to work with the factory spindle/upright.

Works with the factory coil-over shock or with aftermarket stock-replacement coil-over shocks.

Sway bar note: the arms alone will not mount to the factory sway bar. Additional parts are needed for the sway bar to function.

Reuse the factory lower arm mounting bolts at the frame. If you have also added frame support plate kits at the lower arm mounts, upgraded bolts can be used instead.

The two 12-point 5/8" bolts in the kit fasten the lower uniball to the spindle, and the 17-4 stainless spacers locate the uniballs at the wheel and the frame.

Do these work with the factory TRX shocks?

Yes. The arms are designed for the factory coil-over shock and also work with aftermarket stock-replacement coil-overs.

What joints do they use?

A 1.5" FK uniball at the spindle and 1" FK uniballs at the frame, installed when the arms ship.

Will they protect my steering rack?

The arms have steering stops welded into the core, with geometry matched to the spindle, to keep the steering from running past its limits.

Will they bolt to my factory sway bar?

Not on their own. Additional parts are needed for the sway bar to function with these arms.

Can I add a bypass shock?

The arms have the lower bypass shock mount built in for a 3" secondary bypass. It also needs an upper shock mount kit and our special-layout shock, so contact FMI for the current status of the TRX upper mount.

Can I use any bypass shock?

No. The mounts are designed to work with our FMI-specific bypass shock and may not work with other off-the-shelf bypass shocks. Contact FMI for more information on bypass shock fitment.

Are mounting bolts included?

The two 12-point 5/8" spindle bolts are included. The factory frame-side bolts are reused, or upgraded bolts can be used if frame support plates are installed.