• 1" FK uniballs where the factory arm uses a rubber bushing — the bushing is what deflects under load and lets the axle move around, and the uniball is what stops it
• Custom machined 17-4 stainless steel spacers sized to drop into the stock mount locations, so there is no bracketry to change
• Urethane wobble stopper at the front mounts to keep the arms in alignment
• Billet aluminum, available raw or in Fox Orange, Black or Blue anodize

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

This listing is the lower pair. Three ways to go:

• Lowers only — this page. The cheapest way to get the rear lower links off rubber.
• Uppers only — the billet rear upper arms, which also carry the ball post for the wheel position sensor.
• Everything — the complete 2027 rear suspension arm kit, uppers and lowers together.

Available raw billet or anodized in Fox Orange, Black or Blue.

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.

The 2021, 2022, 2023 and 2024 TRX is a different generation and uses the 2021-2024 billet rear lower arms. There was no TRX built between those two runs.

Are the upper arms included?

No, this is the lower pair only. See the options in the section above for uppers or the complete kit.

Do I need to modify the frame?

No. The spacers are machined to fit the stock rear 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 rear axle stays where you set it.

Do the lower arms carry the ride height sensor?

No. The ball post for the wheel position sensor is on the upper arm only — a lower arm never carries one.

Does this fit a 2021-2024 TRX?

Yes. See the Fitment section above for that truck's version.