- What is an alignment?
- Why you need an alignment
- What is Camber, Caster & Toe?
- How adjustments are made for an alignment
- Cam Tab Adjusters
- Why is a UCA needed when lifting your Tacoma?
- How much lift before UCA is needed?
- Ideal alignment setup for a lifted Tacoma
Why Upgrade to Aftermarket Upper Control Arms When Lifting a Tacoma or 4Runner?
When you lift a Tacoma or 4Runner, the angles of the upper and lower control arms are altered. These changes affect alignment, typically resulting in reduced caster and increased positive camber. Aftermarket upper control arms are designed to correct these angles and restore proper suspension geometry.
In addition to alignment, aftermarket UCAs help manage tire clearance near the firewall and cab mounts. High-caster UCAs reposition the upper control arm pivot to increase caster, which can sometimes reduce firewall clearance. Certain designs also work with the lower cam adjusters to move the tire slightly forward in the fender.
Clearance between the upper control arm and coilover can be an issue on some lifts, and aftermarket UCAs are engineered to maximize space and avoid interference.
How Tall Can You Lift a Tacoma or 4Runner Before Requiring Aftermarket Upper Control Arms?
Generally, if you keep your lift under 2 inches on most Tacomas (compared to the stock height), aftermarket upper control arms may not be necessary. Beyond that, you might still get by without them, but your alignment will likely be pushed to the edge of its specifications, which can negatively impact handling and increase tire wear.
