GReddy 11-14 Subaru STI Sedan Supreme SP Exhaust

The GReddy Supreme SP exhaust system is built from polished 304 stainless steel, a material chosen for its strength and resistance to corrosion, ensuring it holds up well under various driving conditions. This cat-back system is specifically designed for the 2011-2014 Subaru Impreza STI sedan, meaning it bolts directly onto your existing exhaust system after the catalytic converter, simplifying installation and ensuring a proper fit without the need for welding.

This system features a dual muffler design, with each muffler measuring 50mm in diameter, contributing to a deeper, more aggressive exhaust note that’s noticeable but not overwhelming. The larger pipe diameter compared to stock helps reduce backpressure, which can lead to improved throttle response and a slight increase in horsepower. The polished finish on the stainless steel not only looks good but also helps protect the exhaust from rust and road debris, keeping it looking sharp for longer.

When installing this exhaust, you can expect a direct bolt-on process, as it's designed to integrate seamlessly with the factory catalytic converter and the rest of your vehicle's exhaust hangers. This makes it a solid option for STI owners looking to enhance their car's sound and performance without undertaking a complex modification. The Supreme SP system aims to provide a balanced exhaust note that complements the performance of the STI engine.