This is an example of an upper and lower control arm bushing for an E46 chassis BMW. There were no Delrin bushings for these components and ones needed to be designed and made to allow for use in Grand-Am Cup competition. These bushings allow the control arms to rotate without flex. These bushings also allow the lower stock control arm to be utilized and out perform the aftermarket ones. The aftermarket ones perform well, but result in subframe damage if the car is in an accident. Over the past year, this has been put to the test and has saved many rear subframes.