GMC Sierra Lifts Require Upper Control Arm Upgrades
JBA Offroad manufacturers upper control arms (also known as UCAs or upper a-arms) for the GMC Sierra for the 2007 to 2015 model years. With the right modifications, GMC Sierra models are wonderfully capable off-road vehicles.
All GMC Sierra models have independent front suspension and require replacement of factory upper control arms when lifted. If factory UCAs are not replaced, your GMC Sierra alignment and clearances will be both incorrect and unsafe.
When GMC Sierras are lifted, caster is lost from the front-end alignment. Caster is critical for stability over 45 miles per hour and returns the steering wheel to center after going around a corner. Additionally, factory upper control arms often rub on the front springs at certain articulations. If factory a-arms are not replaced when lifting a GMC Sierra, expensive and dangerous damage is likely.
JBA led the industry back in 2004 with the development of the first aftermarket upper control arms, which enabled the vehicles with independent front suspension to be safely lifted. Today, JBA upper control arms are installed on thousands of vehicles, including lifted GMC Sierras, and driven all over the world. JBA UCAs work with GMC Sierra lift kits up to 4 inches above factory ride height.
All JBA manufactured parts come with JBA 12-month 100% satisfaction guarantee. If for any reason you are not 100% satisfied with purchase, you can return it to us for a refund of your purchased price within the first 12 months.