New Billet Upper Control Arms
Strength, Smooth, Silent.
No squeaks, no maintenance, no headaches.
$1449 or $131/mo. with Affirm
Engineered for Strength, Style, and Silence.
Whether you’re daily driving, overlanding, rock crawling, or chasing desert trails, these arms handle it all. Billet Upper Control Arms (UCAs) are precision-machined from 6061 aluminum, offering exceptional strength and a refined appearance. Billet UCAs feature Probearing heavy duty ball joints — these joints aren't OE replacements, they're purpose-built for off-road performance to deliver superior articulation and durability. Alongside these joints, SilentSpin™ bushings eliminate grease and squeaks. That means a quiet ride, zero maintenance, and no grease gun. We proudly design and preassemble them in the USA.
A Statement In Craftsmanship
Billet Upper Control Arms are built to endure abuse and look damn good doing so.
6061 Aluminum Strength
Precision-machined from 6061 aluminum for strength and durability under extreme conditions
Geometry Corrected
Keeps alignment dialed with up to 3” of lift
Probearing HD
Ball Joints
Built for off-road performance, 4140 heat-treated, 76° articulation
SilentSpin™ Bushings
Zero grease, zero noise, smooth articulation without the upkeep
More Down Travel
Gain about 1" over stock making it the perfect pair for Dirt King shocks
Adjustable Camber & Caster
Adjustable inner pivot system for camber and caster adjustments
Rebuildable
Simple process to replace wearable components
All Necessary Hardware
Includes UCA bolts and other essential components
A Statement In Craftsmanship
6061 Aluminum Strength
Precision-machined from 6061 aluminum for strength and durability under extreme conditions
Geometry Corrected
Keeps alignment dialed with up to 3” of lift
Probearing HD Ball Joint
Built for off-road performance, 4140 heat-treated, 76° articulation
SilentSpin™ Bushings
Zero grease, zero noise, smooth articulation without the upkeep
More Down Travel
Gain about 1" over stock making it perfect for upgraded shocks
Adjustable Camber & Caster
Adjustable inner pivot system for camber and caster adjustments
Rebuildable
Simple process to replace wearable components
All Necessary Hardware
Includes UCA bolts and other essential components
It's not theory. It's proven. Probearing™ heavy-duty ball joints are tested to 1 million cycles.
Probearing
Heavy Duty Ball Joints
Heavy-duty chromoly joints deliver high articulation and superior strength, sealed to block out debris.
Probearing SilentSpin™ Bushings
Maintenance-free bushings eliminate grease fittings and unwanted noise, ensuring a quiet and responsive ride.
DESIGNED TO PERFORM AND IMPRESS
Every arm is CAD-designed, precision-machined from 6061 aluminum, and quality-checked to reflect our commitment to strength, performance, and craftsmanship.
PERSONALIZE TO MATCH YOUR STYLE AND BUILD
Interchangeable anodized caps and logo plates let you customize the look of your Billet UCAs to match your build.
Featured in
MT PRERUNNER KIT
4.9
Customer Reviews
Best Balance of Off-Road Performance and On-Road Comfort
Best Balance of Off-Road Performance and On-Road Comfort
Explore MT Prerunner Kit
Join the Dirt King Crew
Sign up to get insider access to all the details before anyone else! Discounts, product drops, and when it all goes live.
Site Links
Help & Contact
About Us
Dirt King develops advanced suspension systems for most vehicle makes and models. All of our products are held to the highest standards with quality setting us apart from the rest.
Keep in Touch
Sign up for our newsletter and be the first to know about new product releases and special promotions.
© 2026 Dirt King. All Rights Reserved.