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Product Details
| Part Number: | HS12HC2G3S |
| Brand: | Invidia |
| Color: | Polished |
| Size: | 2.75 in (70 mm) |
| Body Type: | Coupe |
Invidia Q300 Cat-Back Exhaust (Part Number HS12HC2G3S) — for 2012-2015 Honda Civic Si Coupe. Take your Civic Si coupe to the next level with the Invidia Q300 cat-back system. Crafted from premium materials and engineered for performance, this exhaust delivers enhanced sound, improved flow, and a refined yet aggressive aesthetic. Ideal for drivers who want both street usability and spirited driving capability.
Features:
- Full 70 mm (2.75″) mandrel-bent piping — Ensures smooth exhaust flow and minimizes restriction compared to stock.
- 304 stainless steel construction — Durable and corrosion-resistant for long-term reliability.
- Polished rolled stainless steel single exit tip (≈110 mm diameter) — Bold aesthetic finish that complements the rear bumper and enhances visual appeal.
- Flat-bottom shaped muffler design — Optimized for aerodynamic clearance and aggressive under-body posture, while maintaining refined exhaust tone.
- Robot TIG-welded and CNC-machined flanges — Professional build quality ensures a precise fit and superior sealing.
- Bolt-on fitment for the 2012-2015 Honda Civic Si Coupe (K24 engine, 2.4L naturally aspirated) — Direct replacement for stock exhaust with minimal modifications.
- Aggressive yet usable sound profile — Deep sporty tone under throttle, with controlled resonance at cruise to keep it street-friendly.
- 1-Year manufacturer warranty — Backing from Invidia for material and workmanship confidence.
Due to the manufacturer's price control policy, this item may be excluded from promotions and discounts
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
Honda Civic
2012 Honda Civic Si
Coupe
2013 Honda Civic Si Coupe
2014 Honda Civic Si Coupe
2015 Honda Civic Si Coupe
2013 Honda Civic Si Coupe
2014 Honda Civic Si Coupe
2015 Honda Civic Si Coupe
2 Reviews ★★★★★
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Mario Martinez | April 14th, 2022
Excellent fit ,great communication , and on top of restock
Peter | March 8th, 2015
This product has great quality for the price. Usually spending over $700 will net you a great catback. This does it for less. You can cruise by the police with no problem. You want to open the throttle up a bit? Go ahead. It's not loud so much as deep. Smooth bass tones are what this exhaust sings. Pairs awesome with a downpipe.
