GReddy 09-14 Subaru STI Hatchback Supreme SP Exhaust

This is the GReddy Supreme SP cat-back exhaust system specifically made for the 2009-2014 Subaru Impreza Hatchback. If you're looking to change the sound and performance of your STI, a cat-back system like this replaces the factory exhaust from the catalytic converter back, giving you a more aggressive tone and potentially better flow.

GReddy is known for making well-built exhaust components, and the Supreme SP line is designed to offer a noticeable improvement in sound without being overly loud or droney for daily driving. The system is constructed from stainless steel, which helps resist corrosion and ensures it holds up over time. It features a dual muffler design with 4-inch polished tips, giving your Impreza a distinct look from the rear. The piping diameter is 3 inches, which is larger than stock and helps reduce backpressure, allowing your engine to breathe a bit easier.

When installing a cat-back system, you're typically looking at a bolt-on process, meaning no welding is required. This makes it a manageable upgrade for many DIYers. You'll want to ensure you have the necessary hangers and clamps, though this system is designed to fit right onto the factory mounting points. The result is a deeper, sportier exhaust note that complements the performance of your STI Hatchback.