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Invidia HS12HC4G3S Cat-Back Exhaust System - Q300

(2012-2013 Honda Civic Si HFP; 2012-2014 Honda Civic Si; 2001-2002 BMW Z3 M Roadster; 2001-2002 BMW 530i)

Manufacturer

Picture for manufacturer Invidia

Part Number

HS12HC4G3S
11 reviews
Sale Price

$794.24

Estimated ship date Sunday, November 22

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Product Details

The Invidia Q300 Cat-Back Exhaust System delivers enhanced performance and a refined sporty sound through advanced engineering and premium materials. The signature flat-bottom muffler design improves high-speed aerodynamic performance while reducing ground clearance concerns.

Performance Features:

  • Continuous straight-through piping design with Advantex packing material for optimized exhaust flow
  • Engineered back pressure balance maximizes horsepower and torque gains
  • Deep, sporty exhaust note without excessive drone
  • Flat-bottom muffler design for improved aerodynamics and clearance

Construction and Quality:

  • SUS304 polished stainless steel construction for superior corrosion resistance
  • Precision mandrel-bent tubing maintains consistent diameter for maximum flow
  • CNC-machined flanges ensure perfect fitment and leak-free sealing
  • Robot TIG-welded joints for consistent, high-strength welds
  • Polished stainless steel double-wall tips for premium appearance

This exhaust system combines race-proven performance technology with show-quality fit and finish, making it an ideal upgrade for enthusiasts seeking both power gains and enhanced sound character.

Products specifications

Fits

2012-2013 Honda Civic Si HFP; 2012-2014 Honda Civic Si; 2001-2002 BMW Z3 M Roadster; 2001-2002 BMW 530i

Piping

70mm

Tip

110mm

Tip Style

Rolled SS

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