Rear Guide Link Bushings (RTAB), Powerflex - E82 128i/135i, E9X 325i/328i/330i/335i

Powerflex urethane bushings replace the stock rubber bushings in the rear E82 and E90/E91/E92/E93 upper Guide Link (BMW part #33322406289 or 33322409890). The stock rubber bushings wear over time and stiffer urethane bushings last longer and have much less deflection than any rubber bushing. This results in less alignment change even when driven hard and a more planted and secure feeling. This bushing is used on the inner end to connect the Guide Rod arm to the subframe.

BMW does not sell the Guide Link bushings separately. You must buy a new arm to get new bushings (and only get a two year warranty). The Powerflex bushings are a direct replacement for the stock bushings but last longer and have a lifetime warranty!

Unlike other urethane bushings using only one or two urethane grades, Powerflex design engineers choose the correct hardness to allow for the specific movement or rigidity required for each component while minimizing unwanted NVH. Bushings are typically produced in one of three grades – Yellow (70-80A, approximately 25% stiffer than stock), Purple (80-90A, approximately 30% stiffer than stock), and Black (90-95A, approximately 80% stiffer than stock).

Powerflex copper-based grease is supplied with every bushing set, and they will rarely need re-lubing due to the unique design features built into the material to hold the lubricant.

Bushings are sold in pairs. 1 pair of bushings = 2 arms.
BMW Fitments:

1 Series
E82 / E88 (08-13) > 128i
E82 / E88 (08-13) > 135i
E82 / E88 (08-13) > 135is
3 Series
E90 / E91 / E92 / E93 (06-13) > 323i
E90 / E91 / E92 / E93 (06-13) > 325i
E90 / E91 / E92 / E93 (06-13) > 325xi
E90 / E91 / E92 / E93 (06-13) > 328i
E90 / E91 / E92 / E93 (06-13) > 328xi
E90 / E91 / E92 / E93 (06-13) > 330i
E90 / E91 / E92 / E93 (06-13) > 330xi
E90 / E91 / E92 / E93 (06-13) > 335d
E90 / E91 / E92 / E93 (06-13) > 335i
E90 / E91 / E92 / E93 (06-13) > 335is
E90 / E91 / E92 / E93 (06-13) > 335xi