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Invidia (HS12HC4G3S) Q300 Cat-Back Exhaust System with Stainless Steel Rolled Tip for Honda Civic Si Sedan

Free shipping on orders over $29.99

$615.64

$ 99 .00 $99.00

In Stock
  • Package Dimensions: 29.845 H x 151.765 L x 45.72 W (centimeters)
  • Package Weight: 49.15 pounds
  • Piping diameter: 70 millimeter
  • Country of Origin : Taiwan


The flat bottom shaped muffler design results in improved high speed aerodynamic performance. The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater horsepower, torque gains and a rich deep sporty sound. The use of SUS304 polished stainless steel piping, Mandrel bent to shape, state of the art CNC machine made flange, Robot TIG welding and double wall polished stainless steel or Titanium tips, provides outstanding durability and appearance.


Jacquelyn Friedrich
Reviewed in the United States on March 17, 2024
This was the easiest installation I've had for exhaust in a long time, maybe ever. Fit great, came with needed hardware and gaskets, not terribly loud, and looks almost factory.
baltazar bermudez
Reviewed in the United States on August 1, 2020
👍👍👍👍👍👍👍👍
blackmask321
Reviewed in the United States on May 23, 2015
I ordered this for a 2015 Civic Si Sedan. It fits like a glove and the sound is amazing. The quality of the exhaust is insane compared to the stock one that came with my Si. Sound is there but its not an obnoxious ricer sound, the best way i could describe it is that its deep throaty groan that will literally put a smile on your face as your brain translates it to pure performance. I do not have a single regret ordering this exhaust.
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