SMY Stealth Rear Upper Control Arms 08-26 WRX / 08-21 STI STI / 13-25 BRZ / FRS / 86 / 08-14 Impreza | Billet Aluminum | Adjustable Suspension Arms
Overview
The SMY Stealth Rear Upper Control Arms are precision-engineered suspension components designed to unlock the full potential of your Subaru or Toyota sports car’s rear suspension geometry. These billet aluminum adjustable arms replace the factory stamped steel units, providing a robust solution for enthusiasts seeking enhanced camber adjustment. Ideal for lowered vehicles, wider wheel setups, or track-focused alignments, these control arms allow you to fine-tune rear camber to optimize tire contact and handling balance.
Crafted from high-strength billet aluminum using CNC machining, SMY’s control arms emphasize rigidity and lightweight construction. The design incorporates a turnbuckle-style adjustment mechanism for easy and precise camber tuning, paired with heavy-duty bushings that eliminate the deflection and compliance issues common with OEM rubber bushings. Finished with a corrosion-resistant hard anodized coating, these arms are built to withstand daily driving, spirited street use, and track conditions without sacrificing durability or appearance.
For Subaru WRX, STI, BRZ, and compatible Toyota models, these rear upper control arms deliver tangible handling improvements by maintaining optimal suspension geometry under lowered or aggressive setups. This translates to improved cornering grip, reduced uneven tire wear, and sharper suspension response—key benefits for enthusiasts who demand both performance and reliability from their suspension upgrades.
Features & Specifications
This SMY Stealth Rear Upper Control Arms set is engineered for Subaru WRX, STI, BRZ, and Toyota 86/FRS platforms and features billet aluminum construction with adjustable camber tuning. Constructed from CNC-machined billet aluminum, it delivers enhanced suspension precision and durability for Subaru enthusiasts seeking improved handling and alignment flexibility.
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Brand: SMY
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Product: Stealth Rear Upper Control Arms
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Part Number: SMY-SUS-UCA
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Fitment: 2008-2010 STI, 2008-2010 WRX, 2008-2016 Impreza, 2011-2014 STI, 2011-2014 WRX, 2013-2021 BRZ, 2015-2021 STI, 2015-2021 WRX, 2022-2024 BRZ, 2022-2026 WRX
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Material: Billet Aluminum
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Finish: Hard-Anodized
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Construction: CNC Machined
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Origin: Not Specified
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Adjustability: Turnbuckle-style camber adjustment
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Bushings: Heavy-duty premium bushings
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Location: Rear Upper Control Arms (both sides)
Key Benefits
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Performance: Enables precise rear camber adjustment for improved tire contact and cornering grip on lowered or track-tuned vehicles.
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Durability: CNC-machined billet aluminum construction offers superior strength and rigidity over factory steel arms while reducing unsprung weight.
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Fitment: Direct bolt-on replacement with exact factory mounting points, requiring no cutting or welding for seamless installation.
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Adjustability: Turnbuckle mechanism allows fine-tuning of camber settings to correct suspension geometry and reduce uneven tire wear.
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Quality: Heavy-duty bushings eliminate deflection and improve suspension response and road feedback compared to OEM rubber bushings.
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Corrosion Resistance: Hard-anodized finish protects against weather, road debris, and track abuse, maintaining a clean undercarriage appearance.
What's Included
- 1× Set of SMY Stealth Rear Upper Control Arms (both sides)
- 4× 901000109 Mounting Bolts
- 4× 902350022 Mounting Bolts
- Installation instructions
Installation & Compatibility
Installation of the SMY Stealth Rear Upper Control Arms is a direct bolt-on process designed for professional installation due to torque specifications and alignment requirements. The arms mount to the factory locations without modification, but a wheel alignment is necessary after installation to ensure proper suspension geometry and tire wear. Torque specs include 70 ft/lbs for inner mounting bolts to the subframe and 60 ft/lbs for outer mounting bolts to the knuckle. No special tools beyond standard suspension tools are required, but precision and adherence to torque specs are critical for safety and performance.
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Professional Installation: Recommended
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific year and trim level before purchase
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