Revel 03-07 Honda Civic Si Hatchback Medallion Street Plus Cat Back Exhaust

If you're looking to give your 2003-2007 Honda Civic Si hatchback a more engaging sound and a bit of an improved feel, a cat-back exhaust system like this Medallion Street Plus from Revel is a solid option. This system replaces the factory exhaust from the catalytic converter back, which is where most of the muffling and restrictive bends are found. By opening that up, you can expect a deeper, sportier exhaust note that's noticeable without being overwhelming for daily driving, and potentially a slight improvement in throttle response.

Revel builds this cat-back system from SUS304 stainless steel, which is known for its resistance to corrosion and its strength. This means it's well-built to handle the rigors of being under your car for years to come. The Medallion Street Plus is designed to offer a balance – it’s sportier than stock, but still refined enough for everyday use. The piping diameter is carefully chosen to work well with the stock engine, aiming for improved flow without sacrificing low-end torque. Installation is typically a bolt-on affair, replacing your existing exhaust components directly.

When installing this cat-back, you'll want to make sure you have the necessary hardware, though this system is designed to bolt up to the factory connection point. It's a good idea to check the condition of your hangers and any other exhaust components while you're under the car, as this is a great time to address any other wear items. This Revel exhaust should give your Civic Si a more satisfying sound and a more connected feel to the road.