I painted over the label when I got em. And they certainly aren't the 4.5 ones because there is nearly a 2inch difference between the two on the truck. And they're not stock. U can see the arch. I was told they're RC 3.5 but I guess who I bought em from could be wrong. I do know they helped me clear 35's in the back. They still ride nice. They're just too short for me now.