There are a couple issues with the OEM BMW rear trailing arm brackets. First, the bracket is made out of thin stamped steel and can easily crack, rip or bend under high stress like track day driving or drifting. Second, the stock brackets have very little room for movement to dial in the correct toe for your application. We scanned the stock rear trailing arm brackets and made large improvements to get you the desired outcome. These brackets are made from thicker 1/8" steel, not only on the base, but the entire piece to increase rigidity and prevent premature cracking under load. The bolt holes are slightly recessed to allow more clearance. We used thick welded bosses unlike competitors which are only stamped steel. The adjustment slots have been elongated more than double that of the stock BMW brackets. Finally we powdercoat it black to prevent rust. Replaces BMW PN 33303411877, 33303411878 Kit includes left and right side. Fitment: E36, E46, Z4 DOWNLOAD INSTALLATION INSTRUCTIONS
