Are aftermarket upper control arms required on the 2007-UP Toyota Tundra systems?
No, but it is highly recommended.
Aftermarket upper control arms are not required for a 2007-UP Toyota Tundra when setting the vehicle below 2.5" inches of lift over stock. However, lifting the Tundra over 2.5” with the the stock upper control arm will prevent some vehicles from achieving alignment within the factory specs.