Full Race Catback Exhaust for 9th Gen 12-15 Civic Si

Full Race Catback Exhaust - 2012-2015 Honda Civic Si (9th Gen)

One of the first things you should upgrade on your K24Z7 powered 9th gen Civic Si is the exhaust. The Full Race catback gives you a high flowing system that isn't obnoxiously loud. This is a full 3 inch setup that works on naturally aspirated, supercharged, and turbocharged K24 builds. Whether you're stock or planning to go big, this exhaust can handle it.

OEM Plus Sound Without the Rasp

This exhaust gives you a deep, resonant sound that doesn't turn into a raspy mess when you're on the highway. It's not silent, but it's not going to drone you to death on long drives either. You get that aggressive tone when you get on it, but it stays civil when you're just cruising. It's the kind of exhaust you can run on a daily driver without regretting it.

Full 3 Inch Piping for Maximum Flow

The entire system is built with 3 inch mandrel bent tubing. That's a big step up from the stock exhaust and gives you the flow you need for power gains. The larger diameter helps reduce backpressure, which means better throttle response and more power across the RPM range. If you're planning to add a turbo or supercharger later, this exhaust is already sized to support it.

V-Band Clamps Make Installation Easy

Full Race uses V-band clamps throughout the system instead of slip fit connections. V-bands give you a better seal, make alignment easier during installation, and let you remove sections quickly if you need to work on the car later. Everything bolts up to your factory hangers with no cutting or welding required. All the gaskets and hardware you need come in the box.

Works on Turbo Builds

If you're running a turbo K24, this exhaust helps the turbo spool faster and makes more power. The larger 3 inch diameter reduces the restriction after the turbo, which means less backpressure and quicker spool times. You'll notice the difference in how responsive the car feels when you step on the gas.

Proper Ground Clearance

Full Race designed this exhaust to clear your undercarriage and suspension components without any issues. You're not going to scrape on driveways or speed bumps, and it won't interfere if you lower the car. The routing is clean and the hangers use the factory locations, so it sits where it's supposed to.

What You Get

• Full 3 inch mandrel bent stainless steel catback exhaust
• V-band clamps for secure, leak-free connections
• Deep, resonant exhaust tone without excessive drone
• Works with naturally aspirated, supercharged, and turbocharged K24 engines
• Faster turbo spool times on forced induction builds
• Factory hanger locations for bolt-on installation
• All installation gaskets and hardware included
• Proper ground clearance with no modifications needed

Choose Your Fitment

This exhaust is available in two versions depending on whether you have the 2-door coupe or 4-door sedan. Make sure to select the right option for your car.

FG4 2-Door Coupe

Fits 2012-2015 Honda Civic Si Coupe (FG4 chassis code). This version is specifically designed for the 2-door body style.

FB6 4-Door Sedan

Fits 2012-2015 Honda Civic Si Sedan (FB6 chassis code). This version is made for the 4-door body style.

Fits These Cars

• 2012-2015 Honda Civic Si Coupe (FG4)
• 2012-2015 Honda Civic Si Sedan (FB6)
• 2013-2015 Acura ILX 2.4L (with proper fitment verification)

If you're not sure which version you need or have questions about fitment, reach out before ordering.