The E46 M3 trailing arms were equipped with ball joints at both the upper and lower mounting points. On the non-M E36 and E46 models, BMW opted to use a rubber bushing at the lower mounting point rather than a ball joint. During cornering, this rubber bushing tends to wear out significantly faster than a ball joint would. Thankfully, you can replace the bushing with a ball-joint to copy the E46 M3 design. This kit includes four OE trailing arm ball-joints in order to refresh the upper ball-joints and upgrade the lower bushings. Another issue of the E36 / E46 are the RTAB. The rear trailing arm bushings, most commonly known as RTABs, are the first bushings to wear in the trailing arms. This kit replaces, and upgrades the RTABs to a monoball bushing that is also adjustable. The rear suspension is designed to toe out when you lower your car. If you lower your car, you will eventually reach a point where the factory adjustment can't bring the alignment at 0 toe. You reach between 4 to 5mm of toe-in with the additional range of adjustment that this kit provides. This kit is designed to get the most out of the rear trailing arm suspension. Our monoball design allows a full articulation of the rear trailing arms. It is ideal for track days. We use an OE monoball bushing inside our cups. Unlike most aftermarket spherical bearings, they are sealed with a rubber boot. It is much more durable, and doesn't require any maintenance or cleaning. Should I refresh my trailing arms? Suffering uneven tyre wear, clonk noises coming out of the trailing arms, unbalanced braking or a less predictable rear end while cornering are signs of worn trailing arm components. This kit will drastically improve your car's handling and enhance its reliability. What's included? This kit includes two OE upper trailing arm ball-joints, two OE lower trailing arm ball-joints and a set of Tech-53 variable toe monoball RTAB. It replaces part numbers #33326770786 and 33306852895. Will it fit my car?Fits BMW E36 - All models (except compact / Ti)Fits BMW E46 - All modelsFits BMW Z4 - All models
