AMERICAN MADE OFF-ROAD INNOVATIONS

MAKING OFF-ROAD GREAT SINCE '98
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2025+ Ram RHO Rear Lower Suspension Arms - Billet Aluminum

Description

Billet aluminum rear lower suspension arms for the 2025 and newer Ram 1500 RHO, sold as a pair and built to fit the factory mount locations. Each arm runs 1" FK uniballs with custom machined 17-4 stainless steel spacers.

The rear lower arms carry acceleration and braking load into the chassis. A machined billet arm on uniball pivots locates the axle on a defined pivot, and a urethane wobble stopper at the front mount keeps the arms in alignment.

What Is In The Kit
Pair of FMI billet aluminum rear lower suspension arms for the Ram 1500 RHO
  • 2 FMI billet aluminum rear lower arms
  • Spacers and hardware for installation

Why Billet Lower Arms

On a link-located rear axle, the lower arms do the heavy lifting: they push the truck forward under acceleration and hold the axle in place under braking. Any give at their pivots lets the axle move when it should stay put.

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. The billet aluminum arm body is machined as one piece, and the 17-4 stainless spacers locate each uniball in the stock mounts.

How It Is Built
  • Billet aluminum 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.

Fitment

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

Finishes

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

Questions

Does this kit include both lower arms?

Yes. You get two billet lower arms with their spacers and hardware.

What joints does it use?

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

What is the wobble stopper for?

The urethane wobble stopper at the front mounts keeps the arms in alignment.

What finishes are available?

Raw billet aluminum, black anodize or blue anodized.

Color:
$ 1,899.99
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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