JXB Performance MQB Spherical Rear Lower Control Arm Inner Bushing Upgrade - MQB04A0

Benefits

The rear lower control arm bushing works with trailing arm to hold the rear alignment, and transfer cornering forces to the tires. Like the trailing arm bushing, it is extremely flexible under load, causing alignment to vary under acceleration, braking, and cornering and resulting in a lag between driver inputs and vehicle response. The spherical upgrade increases the precision and responsiveness of the rear end:

Inspires more confidence in corners

Delivers better road feel and feedback

Holds alignment under load

Does not bind

Eliminates random oscillations to increase grip

Whats Included

2 spherical rear lower control arm inner bushings with motorsport-grade PTFE-lined spherical bearings

FK WSSX10T bearings are standard, optional upgrade to Aurora PWB-10T bearings

Both options feature a stainless steel ball and race and bonded PTFE liner

Fitment

MkVII Volkswagen Golf/GTI/R

8S/8V Audi A3/S3/RS3

8S/8V Audi TT/TTS/TTRS

Why Spherical

Rubber bushings act like little springs at each suspension pivot point. They allow suspension geometry to change under load, ruining your alignment and causing unwanted handling characteristics like steering wander, binding, camber, caster, and toe changes, and lack of steering and suspension feedback. Spherical bearings do not bind or flex under load, creating perfect suspension joints.

Construction

We use only the highest quality motorsport-grade PTFE-lined bearings for best performance and lifespan. We use high strength 7075 aluminum for the bolt sleeves, and 6061 for the bearing cups. Bearings are interference-fit into the cups, so they won’t creak or rattle. Both internal and external retaining rings ensure everything will always stay in place.

Please note that lifespan will vary based on the application and driving conditions. Spherical bearings do have moving parts, so they do wear. Our bearing kits are fully rebuildable. Please contact us for rebuild kits.