SuperPro Alloy Front Lower Control Arm Set
2008–2021 Subaru WRX / WRX STI | PN ALOY0015K
Lightweight Alloy Arms with Geometry Correction
Upgrade the front suspension of your Subaru with the SuperPro Alloy Front Lower Control Arm Kit. Designed for 2008–2014 WRX STI and 2011–2014 WRX (with broader compatibility through 2021 models), this kit delivers a complete performance solution with STI-style alloy arms, upgraded bushings, and optimized suspension geometry.
This bolt-on upgrade improves handling, traction, and steering response while reducing weight compared to factory steel control arms.
Built-In Caster & Anti-Lift Geometry
The ALOY0015K kit features SuperPro’s caster offset DuroBall rear bushings combined with upgraded front bushings, providing additional caster and integrated anti-lift geometry. This enhances front-end grip and stability by improving tire contact with the road during:
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Acceleration
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Cornering
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Braking
The result is a more responsive, planted front end with improved traction and driver confidence.
High-Strength Alloy Construction
Constructed from lightweight, high-strength alloy, these control arms offer increased rigidity and durability over OEM steel arms while reducing unsprung weight. This leads to better suspension response and improved overall performance.
Pre-Assembled for Easy Installation
The control arms come pre-installed with SuperPro bushings, making installation straightforward. The kit also includes new OEM-style ball joint bosses, eliminating common issues with seized factory components and simplifying the installation process.
Performance Benefits
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Improved tire contact patch for increased grip
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Enhanced steering response and feedback
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Reduced front-end lift under acceleration
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Increased stability during braking and cornering
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Lightweight design improves suspension performance
What’s Included
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(2) SuperPro alloy front lower control arms with pre-installed bushings
Key Features
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STI-style alloy lower control arms
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Pre-installed SuperPro forward bushings
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Caster offset DuroBall rear bushings
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Integrated anti-lift geometry
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Lightweight, high-strength alloy construction
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Includes new ball joint bosses for easier installation
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Improves handling, grip, and front-end stability
Vehicle Fitment
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2008 Subaru WRX STI
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2009 Subaru WRX STI
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2010 Subaru WRX STI
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2011 Subaru WRX STI
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2012 Subaru WRX STI
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2013 Subaru WRX STI
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2014 Subaru WRX STI
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2011 Subaru WRX
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2012 Subaru WRX
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2013 Subaru WRX
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2014 Subaru WRX
May fit additional 2008–2021 Subaru WRX/STI applications with supporting modifications. Additional components (sway bars, wheel/tire setup, etc.) may be required depending on configuration.
Additional Information
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Position: Front Lower
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Kit Contents: 2 Arms
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Kits Required: 1
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Warranty: 3 Years
If you're looking to improve front-end grip, reduce weight, and enhance suspension geometry on your WRX or STI, the SuperPro ALOY0015K Alloy Control Arm Kit delivers a complete, high-performance upgrade.
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