What is caster adjustment and why would I want to change it?

Caster is an alignment angle that affects steering stability and cornering. Increasing positive caster generally improves straight-line stability and steering wheel return after a turn, while also enhancing steering feel during cornering. These bushings allow you to adjust caster beyond factory specifications to fine-tune your vehicle's handling characteristics.

Do these bushings come with new control arms?

No, the OEM control arms are not included with this kit. These bushings are designed to replace the stock rubber bushings within your existing control arms.

Are these bushings compatible with my rear-wheel drive BMW?

No, these specific caster rod bushings are designed only for BMW xDrive (AWD) models. They will not fit rear-wheel drive vehicles.

SPL Parts Adjustable Caster Rod Bushings for BMW F3X AWD

Name: SPL Parts 2012+ BMW 3 Series/4 Series F3X Adjustable Front Caster Rod Monoball Bushings
Brand: SPL Parts
Price: 499.39 USD
Availability: InStock

SPL Parts 2012+ BMW 3 Series/4 Series F3X Adjustable Front Caster Rod Monoball Bushings

$499.39

Only 2 left in stock

SPL Parts adjustable caster rod monoball bushings for 2012+ BMW F3X AWD models. Improves handling and braking feedback.

Key Features

Fits 2012+ BMW F2X and F3X xDrive (AWD) models.
Replaces stock rubber bushings with low-friction spherical bearings to eliminate deflection.
CNC machined offset spacers allow for +/- 4 degrees of caster adjustment.
Features 1-inch FK Racing spherical bearings with self-lubricating Teflon liners.
Bearing housings and spacers are made from 6061-T6 aluminum.
Improves braking and handling feedback by maintaining suspension geometry under load.

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Will this fit your vehicle?

Product Details

SPL Parts is known for making well-built suspension components that help drivers get the most out of their cars. These adjustable front caster rod bushings are a prime example, designed to replace the stock rubber bushings on your BMW's xDrive (AWD) F2X or F3X chassis. By swapping out the flexible rubber for low-friction spherical bearings, you eliminate unwanted deflection in the suspension. This means your suspension geometry stays more consistent when you're braking hard or cornering, giving you improved feedback and better control.

What's really neat about these is the CNC machined offset spacers. They let you dial in up to +/- 4 degrees of caster adjustment, which is a big deal for fine-tuning your car's handling. The kit uses massive 1-inch FK Racing bearings with self-lubricating Teflon liners, built for serious performance and durability. These are made in the USA from 6061-T6 aluminum, ensuring they're strong and corrosion-resistant. They fit a wide range of BMW models like the 328i xDrive, 430i xDrive, and M240i xDrive, among others.

If you're looking to sharpen up your BMW's steering response and get more confidence on the road or track, these bushings are a solid option. Just remember that the OEM control arms are not included, and these are specifically for xDrive (AWD) vehicles.