E36 RTAB Mount Cups

     There's a point when you lower your E36 that you can no longer adjust the toe in on the rear arms and they start to toe out. We've made these Mounting Cups for the rear arms to replace the factory RTAB cups and allow up to 1 degree more toe in. These mount cups will allow the use of any RTAB's and still have adjustment on lowered cars.

    When you lower your car, you also loose traction due to the change in angle on the main arm, we've built in some angle correction as well, something you can't get from common offset RTAB's. 

General Fitment and Installation

  These cups are super simple to install, just pull the 3 bolts that hold the stock cups in the chassis, drop the arm down, pull the single cross bolt in the RTAB and install the new cup in the reverse order.

Material and Construction

   To start with, the material is CNC laser cut for accuracy, then we form and weld them in house. The cups are made from 1/8" steel, a bit thicker then stock for a bit more strength, chances are good your either making more power or running harder then just a stock car was intended for, so we made them stronger then stock. We also form dimples in the sides of the cups like factory for easier fitment and increased strength of the side walls.

Kit includes

   Right and Left side cups