SMY Stealth Adjustable Heavy Duty Rear Trailing Arms 2008-2014 WRX / STI | Adjustable Caster | Rear Suspension Upgrade
Overview
The SMY Stealth Adjustable Heavy Duty Rear Trailing Arms are engineered to enhance the rear suspension performance of 2008-2014 Subaru WRX and WRX STI models. These trailing arms replace the factory components with a robust, adjustable design that controls unwanted forces during acceleration and braking. Ideal for enthusiasts seeking improved traction and stability, these arms address common issues like wheel hop and vibration, delivering a smoother and more controlled driving experience.
Designed with precision, the SMY trailing arms feature adjustable pillow ball mounts that allow for +/- 12mm of caster adjustment. Constructed from stainless steel and finished in gloss black paint, they offer durability and corrosion resistance while maintaining a clean OEM+ appearance. The heavy-duty pillow ball bushings reduce deflection and provide a direct connection to the chassis, reflecting SMY’s commitment to quality and performance in Subaru suspension upgrades.
By controlling rear wheel movement more effectively, these trailing arms improve traction under hard acceleration and braking, which is especially beneficial for WRX and STI owners who push their cars on the street or track. The adjustability allows fine-tuning of rear caster angles to optimize handling balance and tire wear, making this upgrade a practical and impactful choice for Subaru enthusiasts focused on chassis dynamics.
Features & Specifications
This SMY Stealth Adjustable Heavy Duty Rear Trailing Arms are engineered specifically for 2008-2014 Subaru WRX and WRX STI models and feature adjustable pillow ball mounts for precise rear caster tuning. Constructed from stainless steel with a gloss black finish, these trailing arms deliver enhanced durability and suspension control for Subaru owners seeking improved handling and reduced wheel hop.
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Brand: SMY
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Product: Stealth Adjustable Heavy Duty Rear Trailing Arms
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Part Number: SMY-SUS-TRLGR
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Fitment: 2008-2010 Subaru WRX STI, 2008-2010 Subaru WRX, 2011-2014 Subaru WRX STI, 2011-2014 Subaru WRX
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Material: Stainless Steel
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Finish: Gloss Black Painted
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Construction: Welded
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Origin: Not specified
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Adjustment Range: +/- 12mm for Rear Caster
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Mount Type: Heavy Duty Pillow Ball Mounts
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Torque Specs (Trailing Arm to Chassis): 75–80 ft-lbs
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Torque Specs (Trailing Arm to Hub/Knuckle): 75–80 ft-lbs
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Installation Type: Bolt-on / Direct OE Replacement
Key Benefits
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Performance: Reduces wheel hop and vibration under acceleration for improved traction and stability.
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Adjustability: Allows fine tuning of rear caster angle by +/- 12mm to optimize handling balance and tire wear.
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Durability: Heavy duty stainless steel construction with gloss black finish resists corrosion and withstands track and street use.
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Fitment: Direct bolt-on replacement designed specifically for 2008-2014 WRX and WRX STI models ensures precise fitment and easy installation.
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Quality: Features robust pillow ball mounts that provide a firmer connection than factory bushings without sacrificing ride quality.
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Control: Improves rear suspension geometry under load for smoother braking and acceleration response.
What's Included
- 1× Pair of SMY Stealth Adjustable Heavy Duty Rear Trailing Arms
- Heavy Duty Pillow Ball Bushings pre-installed
- Installation instructions (recommended for proper torque and load conditions)
Installation & Compatibility
Installation of the SMY Stealth Adjustable Rear Trailing Arms is a direct bolt-on process designed to replace the factory trailing arms on 2008-2014 Subaru WRX and WRX STI models. Proper installation requires the vehicle to be at full load (suspension compressed) when torquing bolts to specification to ensure correct bushing alignment and performance. While the hardware is included, professional installation is recommended to achieve precise torque settings and caster adjustment. No special tools beyond standard suspension tools are required, but alignment after installation is necessary to maximize handling benefits.
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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 within 2008-2014 WRX and WRX STI
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