AMERICAN MADE OFF-ROAD INNOVATIONS

MAKING OFF-ROAD GREAT SINCE '98

2025+ Ram RHO Rear Suspension Arm Kit - Billet Aluminum

Description

A billet aluminum rear suspension arm kit for the 2025 and newer Ram 1500 RHO: both upper and both lower arms, built to fit the factory mount locations. Every arm runs 1" FK uniballs with custom machined 17-4 stainless steel spacers.

Doing the uppers and lowers together replaces all four trailing arms in one order. The lowers carry acceleration and braking load, the uppers control axle wrap, and a urethane wobble stopper at the front mounts keeps the arms in alignment.

What Is In The Kit

FMI billet aluminum rear upper and lower suspension arms for the 2025 Ram 1500 RHO
  • 2 FMI billet aluminum rear upper arms with spacers and hardware
  • 2 FMI billet aluminum rear lower arms with spacers and hardware

This kit does not include a panhard bar upgrade.

Why Replace The Upper And Lower Arms

The RHO's rear axle is located by four trailing arms. The lower arms push the truck forward and hold the axle under braking. The upper arms stop the axle from twisting and hold pinion angle.

A rubber-bushed link deflects a little every time load goes through it. A uniball pivot does not, so the axle stays where the arms put it. Replacing all four at once means none of the trailing arms are left as the soft point.

How It Is Built

  • Billet aluminum upper and lower arms.
  • 1" FK uniballs at the pivots.
  • 17-4 stainless steel heim spacers, custom machined to fit the stock mount locations.
  • Urethane wobble stopper at the front mounts to keep the arms in alignment.
  • Aluminum ball post on the upper arm for the suspension travel sensor, so the truck continues to work correctly.

Fitment

Fits the 2025 and newer Ram 1500 RHO rear suspension, in the factory upper and lower arm mount locations.

The panhard bar is not part of this kit.

Finishes

Three options: raw billet aluminum, black anodize and blue anodized.

Questions

What does this kit replace?

Both rear upper arms and both rear lower arms. It does not include a panhard bar.

Will the suspension travel sensor still work?

Yes. The upper arm carries an aluminum ball post for the factory suspension travel sensor so the truck works correctly.

What joints does it use?

1" FK uniballs, located in the stock mounts by custom machined 17-4 stainless steel spacers.

Is hardware included?

Yes. Each arm comes with its spacers and hardware.

What finishes are available?

Raw billet aluminum, black anodize or blue anodized.

Color:
$ 3,399.99
ANODIZED CARE & DISCLAIMER:   read before ordering
⚠️ WARNING:
 Improper cleaning can permanently damage the anodic coating on billet aluminum parts, causing fading, staining, or discoloration. 

SOAPS / CLEANERS THAT DAMAGE :
High-pH (alkaline) soaps, degreasers, and acidic wheel cleaners can fade, stain, or strip anodized aluminum, especially when they contain sodium hydroxide (lye) or other strong acids. Heavy-duty fast-acting alkaline cleaners designed for engine bays or wheels should not be used on anodized surfaces.

❌ WHAT TO AVOID :
High-pH (alkaline) cleaners
• Heavy-duty degreasers
• Wheels / engine bay cleaners
• Oven cleaners (e.g., Yellow Cap, Easy-Off)
• Products containing sodium hydroxide (lye)
• Damage the anodic coating 
Hot Surfaces
• Never wash in direct sunlight, as heat accelerates chemical damage
 Acidic cleaners
• Wheel cleaners with strong acids
• Nitric or sulfuric-based cleaners
• Aggressive aluminum cleaners
 Aluminum brighteners or etchers

• Products designed for raw or polished aluminum can strip the anodized coating

✅ HOW TO PROTECT ANODIZED ALUMINUM:

pH-neutral soaps 
• only use cleaners with a pH between 6–8
Wash on cool surfaces
• Avoid direct sunlight or hot parts
Test small areas first
• Always try new products on a small, hidden area
Safe Alternatives:
• Isopropyl alcohol (used carefully and sparingly)
• Mild Automotive Car Wash Soap

⚠️ RESPONSIBILITY NOTICE:
Damage caused by improper cleaning chemicals or detailing products is the sole responsibility of the owner. Keeping your anodized parts clean with the right products will help maintain their finish and extend their lifespan.

Delivery and Shipping

  • All in-stock products typically ship within 48 hours. 
  • For items that are not currently in stock, please expect 4–6 weeks for production and delivery. 
  • For stock status on products, contact our customer service team, and a representative will assist you with the most up-to-date availability and information: (480) 718-9800 | info@foutzmotorsports.com 

PROP 65 WARNING

This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov

Thank you for your trust in Foutz Motorsports. We appreciate your business. Please let us know if there is anything we can do to make your experience even better. (480) 718-9800 info@foutzmotorsports.com

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