Anyone considering going the Powerflex route needs to be aware ECS Tuning sells the full kit (ALL subframe and suspension bushings produced by Powerflex) at a big discount (over 30% off). ECS usually runs the special twice a year.

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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!