The new Pro Comp Pro Runner Control Arms deliver amazing performance and increased durability for lifted, leveled or stock trucks. The factory upper control arms have weak ball joints and stamped steel construction that is not designed to handle off road use. Pro Comp has engineered the new Pro RunnerTM Control Arms utilizing oversized stainless steel FK uniball joints. The big uniball joints provide unparalleled strength over factory ball joints. Heavy duty 1 inch chromoly tubular construction and reinforced pivot bushing mounts are used to eliminate flex and handle the added load from extreme suspension cycling. Large PTMEG pivot bushings are equipped with zerk fittings for easy maintenance and quiet operation. Each arm is finished in a durable black powder coat finish for years of lasting performance, and includes a billet machined dust cap to keep dirt and debris out of the uniball.
We're working on getting more reviews for this product. In the meantime, here's what people are saying about 4WP
Q: I installed a 3 inch front leveling kit and 1.5 inch wheel spacers in my 2018 zr2 colorado, and the travel of the suspension feels stiff. Will this upper control arm solve that problem or I need to add something else. It has the stock zr2 shocks. Answer this question
A: With vehicle stationary, take a look at the upper control arm at the ball joint. See if the ball joint is at or near its maximum angle. If so, then the feeling you are getting is ball joint bind. The 51005B will correct ball joint bind.
Answered by Kelly from 4WP Corporate Headquarters on 03/04/2021
Q: Will these fit a 2014 f150 STX model? I have peers who have the same arms on theirs Answer this question
A: The 57003B is for the Toyota 4Runner / FJ cruiser. The Upper control arm for the 2014 F150 needed is 52001B.
Answered by Kelly from 4WP Corporate Headquarters on 01/11/2021
Q: Where do you get the replacement ball joints for this product I could not find them on the website Answer this question
A: Hi Ryan, I will inquire about replacement ball joints for the Pro Comp Uniball Upper A Arm with Billet Dust Cap being on the website. In the mean time you can contact customer service @ 877-474-4821. I believe they should be able to help you.
Answered by Bsummers@4wp.com on 02/11/2019
Q: I have a 2012 Silverado 1500 with a 3.5" rough country lift and my ball joints are failing. I want to know if this product will work. Will it correct ball joint angles. Also is the uniball joint replaceable. Answer this question
A: Hello Tyler, Yes, this arm will help correct the alignment and eliminate ball joint failure. Thank you for the question.
Answered by RK on 10/02/2015
Q: Some UCA manufactures specifically state if their UCAs will help correct alignment issues if you have a 3" lift or more. I have a 2006 Toyota Tacoma with a 3" lift, I'm curious if this will help my alignment issue or if I should just buy the TC UCAs. Thanks Answer this question
A: Hello Gunrunner, That is correct. This will help correct alignment with wheels that are lifted from 1" to 3.5" over stock height. Thank you.
Answered by RK on 09/20/2015
Pro Comp Suspension has spent the last two-and-a-half decades engineering, testing and manufacturing products that will give Jeep drivers the confidence to dominate whatever terrain is ahead. The Pro Comp Promise Life Time Warranty is forever. Pro Comp's warranty goes with the suspension products on Jeeps whether or not the Jeep owner is the person who originally purchased the product. Pro Comp Suspension can afford to give such a warranty because the products are produced at the Pro Comp facility in San Diego, California under exacting manufacturing standards. Pro Comp Suspension is the only suspension company with products that are tested under true driving conditions on outside roads, rather than simulated testing. Shop Pro Comp Suspension Now
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