2027 Ram TRX Rear Suspension Arm Kit - Billet Aluminum

• 1" FK uniballs in place of the factory bushings — the axle goes where the arm puts it instead of wherever the rubber lets it go
• Custom machined 17-4 stainless steel spacers sized for the stock mount locations, so nothing on the frame or axle has to change
• Urethane wobble stopper at the front mounts to keep the arms in alignment
• Aluminum ball post on the upper arms for the wheel position sensor, so the truck keeps reading rear suspension position and the adaptive shocks keep working
• Billet aluminum construction — raw, black anodized or blue anodized

Kit includes: (2) FMI billet aluminum upper arms and (2) FMI billet aluminum lower arms, with spacers and hardware.

Not included: the panhard bar. That is a separate upgrade — see the options below.

All four arms are sold together here, and individually if you are doing the job in stages.

• This kit — all four arms, uppers and lowers. The complete job in one order.
• Upper arms only — the pair that carries the ball post for the wheel position sensor.
• Lower arms only — the bottom pair on its own.

If you are already under the truck, the panhard bar is the part worth doing at the same time — it is what controls side-to-side axle location, and the arms cannot do that job for it. Choose the Johnny Joint or heim joint version.

Raw billet, black anodized or blue anodized.

Anodizing is a surface finish, not paint. Wash off desert dust and road salt, and keep harsh acidic wheel cleaners away from the arms — those are the fastest way to dull an anodized finish.

2027 Ram 1500 TRX, factory rear mount locations. No frame or axle modification.

The 2021, 2022, 2023 and 2024 TRX is a different generation and uses its own version of this kit. Ram did not build a TRX for 2025 or 2026, so a part listed for 2021-2024 does not carry forward to the 2027 truck — check the year on the listing, not the model name.

How many arms come in the kit?

Four — two upper arms and two lower arms, with all spacers and hardware.

Is the panhard bar included?

No. The panhard bar is a separate upgrade and is linked in the section above.

Will the rear ride height sensor still work?

Yes. The upper arms carry an aluminum ball post for the wheel position sensor. A lower arm never carries one.

Do I need to modify the frame or axle?

No. The 17-4 stainless spacers are machined to drop into the stock mount locations.

What does the wobble stopper do?

The urethane piece at the front mounts keeps the arm from walking side to side, so the axle stays where you set it.

Does this fit a 2021-2024 TRX or a Ram RHO?

No. This kit is for the 2027 TRX. The RHO and the 2021-2024 TRX each use their own rear arms — send us your truck and year and we will point you at the right one.