What is the main benefit of adjusting caster?

Adjusting caster helps to improve directional stability and steering feel. It can correct a tendency for the vehicle to pull to one side and makes the steering feel more centered and responsive, especially at higher speeds.

Does this kit include everything needed for installation?

This kit includes the complete alloy control arms and radius arms with SuperPro bushings and ball joints pre-installed. It also comes with a spanner tool for adjusting the radius arms. You may need standard suspension tools for removal and installation.

Will these arms increase noise or vibration in the cabin?

No, the SuperPro bushings are designed to allow for full articulation and movement without binding, and are engineered to avoid increasing noise, vibration, or harshness (NVH) in the cabin.

Superpro Front Control Arm Set ALOY0090K - BMW 128i 2008-201

Name: SuperPro 2008 BMW 128i Base Front Control Arm & Radius Arm Set
Brand: Superpro
Price: 699.99 USD
Availability: InStock

SuperPro 2008 BMW 128i Base Front Control Arm & Radius Arm Set

$699.99

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

SuperPro Front Control Arm & Radius Arm Set. Improves caster and stability for a better driving feel.

Key Features

Fits a wide range of BMW vehicles including 1 Series, 3 Series, and Z4 models.
Replaces factory rubber bushings and ball joints with SuperPro components for improved performance.
Allows for independent adjustment of caster on each side of the vehicle.
Provides a fixed 1-degree camber increase with the alloy lower control arms.
Radius arms are adjustable on-car for up to 0.8 degrees of caster change.
Includes SuperPro bushings and ball joints for full articulation without binding.

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Will this fit your vehicle?

Product Details

If you're looking to dial in your BMW's suspension for improved handling and steering feel, this SuperPro Front Control Arm and Radius Arm Set is a solid option. This kit replaces the stock rubber bushings and ball joints with more robust components, allowing for precise adjustments to your front-end geometry. It's designed to give you more control over caster and camber, which can help correct pulling issues and enhance directional stability, especially during hard braking or cornering. You'll notice a more connected feel to the road, and the improved stability can even help extend the life of your tires by promoting more even wear.

This set includes both the front radius arms and the lower control arms, all made from strong alloy. The lower control arms feature an M3-style design with a fixed camber increase and a heim-style bushing for full articulation without binding. The radius arms are adjustable on the car, allowing you to add up to 0.8 degrees of caster on each side. SuperPro includes a spanner tool specifically for adjusting the radius arms, making the process more straightforward. These arms are built to be lighter and stronger than the factory parts, optimizing your vehicle's geometry for better grip and feedback.

This kit is a complete replacement for your factory arms and includes the SuperPro bushings and ball joints already installed. It's designed to fit a wide range of BMW models, including the 1 Series, 3 Series, and Z4. While it offers a significant performance upgrade, the SuperPro bushings are engineered to avoid introducing unwanted noise, vibration, or harshness into the cabin, so you can enjoy improved handling without sacrificing ride comfort.