My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Rock Krawler RK08504 X-Factor Pro Elite Billet Aluminum 4-Link Upgrade Kit

Manufacturer

Picture for manufacturer Rock Krawler Suspension

Part Number

RK08504
8 reviews
Sale Price

$2,607.50

Estimated ship date Friday, November 20

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Rock Krawler RK08504 X-Factor Pro Elite Billet Aluminum 4-Link Upgrade is a heavy-duty suspension control arm package engineered to replace factory radius arms with a high-performance 4-link front suspension geometry. Designed for Ford Super Duty trucks, this kit delivers superior axle control, improved on-road ride quality, and dramatically enhanced off-road articulation compared to stock radius arm systems.

At the heart of this kit are Rock Krawler's signature PB+J (Pure Beef and Jealousy) billet control arms. Each arm is precision machined from 2" x 3" 7075 billet aluminum — one of the strongest aluminum alloys available — paired with 1/4" thick laser-cut steel boxed 4-link mounting forks for an exceptionally rigid and durable assembly. The arms feature 1-1/4" shank Pro-X Krawler Joints, which allow for precise axle positioning and caster adjustment to dial in your suspension geometry.

Key Features:

  • 4 PB+J Billet 7075 Aluminum 4-Link control arms
  • Arms precision machined from 2" x 3" 7075 billet aluminum stock
  • 1/4" thick laser-cut steel boxed 4-link mounting forks included
  • 1-1/4" shank Pro-X Krawler Joints for axle positioning and caster adjustment
  • Converts factory radius arm setup to a true 4-link front suspension
  • Improved on-road ride quality over OEM radius arms
  • Superior axle control and dramatically improved off-road articulation
  • Suitable for street, towing, trail, and off-road use

The 4-link geometry upgrade removes the inherent bind and handling compromises associated with factory radius arm designs. Whether you're commuting, towing, or tackling challenging terrain, the RK08504 provides a noticeably smoother and more controlled suspension response. This kit is ideal for Super Duty owners seeking a premium suspension upgrade that combines aerospace-grade materials with proven Rock Krawler engineering.

Very easy website to navigate and order from. Payment process was quick and easy as well. Delivery schedule was as promised and arrived as scheduled.

Super easy to navigate site and delivery of item was very fast as well.

best price fast shopping

so far so good

First time buying from Autoplicity,Very pleasant purchase experience, no problem whatsoever with shipping, all around good deal for what I was looking for - the Pingel High Flow 6111-AH gas petcock works great Thanks!

Website is easy to navigate, prices are reasonable and the website was smooth without any hiccups.

Excellent service!

Finding the item was great. There were not many places that had it due to stock shortages from Onan/Cummins. The price was a lot lower than the closest company that stocked it. Ordering was easy. However, I contacted CS due to the fact that the "Tracking" link in the email did not lead me to any type of tracking. The only thing it did was go to the invoice for the order. I was kind of bugged as I was getting ready to head out of town and needed the part. I do web app design and implementation for a living. Someone needs to check the click on links to ensure they go to the proper place.

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy