Laser cut from 4130 chromoly, then CNC broke for precise fitment, we’ve meticulously designed our Boxed Trailing Arms to be a problem solving bullet proof solution for your X3. Our Boxed Trailing Arms address all the common weak points that typically cause failures on OEM arms.
Our Gen 2 trailing arms, like all CA Tech USA brand products, are included in our Hassle-free Lifetime Warranty.
If you can break it, we will replace it.
Our Boxed Trailing Arms come complete with high quality UHMW-PE TIVAR® material bushings pre-installed.