SuperPro 2008 Subaru Impreza WRX STI Front Lower Alloy Control Arm Kit (+Caster)

If you're looking to get more out of your 2008-2014 Subaru Impreza WRX STI's suspension, especially when pushing it hard on the street or track, this front lower alloy control arm kit from SuperPro is a solid upgrade. It's designed to optimize your front-end geometry, giving you a more effective tire contact patch during acceleration, cornering, and braking. This means you'll experience greater grip and traction, making the car feel more planted and responsive.

What makes this kit stand out is the combination of a strong, rigid alloy arm that also offers a slight weight saving over the stock steel arms. It comes with pre-installed SuperPro bushings in the front position and a special caster offset DuroBall bushing assembly in the rear. This setup allows for a bolt-on STI-style alloy arm with optimized geometry, providing additional caster and anti-lift characteristics. The kit also includes new OEM-style ball joint bosses, which can make installation easier, especially compared to dealing with seized ball joints on some factory arms.

This kit is a comprehensive performance upgrade. The improved geometry works the tires more efficiently, translating into better overall handling and a more connected feel to the road. While it's a direct fit for the 2008-2014 WRX STI and 2011-2014 WRX, it's worth noting that fitment on other Subaru models might require additional parts or adjustments to wheel and tire setups, particularly on non-widebody vehicles.