Fitment Information

• Honda Civic EX 1.8L Sedan / Coupe (2002, 2003, 2004, 2005)
• Honda Civic Si 2.0L Coupe (2002, 2003, 2004, 2005)   
  
  • Chassis:
    • EX - FD/FN
    • Si - FA5
  • Engine: 
    • EX - 1.8L SOHC i-VTEC I4 (R18A1)
    • Si - 2.0L DOHC i-VTEC K20Z3 I4
  • Transmission:
    • EX - 5-Speed Manual or Automatic 
    • Si - 6-Speed Manual Only
• Select fitment in drop down before ordering

Specs & Feature

• EX version includes 70mm Extension Piece for Sedans
• Tip Option: Dual Single-walled Rounded Tip
  
• Inlet / Outlet Diameter: 2.25" OD (EX Version) 2.5" OD (Si Version)
  
• Tip Diameter (IN): 4" OD
• Tip Finish: Polished or Burnt
• Material: Premium T-304 stainless steel for long-lasting strength and corrosion resistance.
  
• Mandrel Bends: CNC mandrel-bent piping ensures smooth airflow and maximum exhaust velocity.
  
• Construction: TIG-welded, CNC flanges deliver tight seals and durability under pressure.
  
• Sound: Deep, aggressive tone — throaty at throttle, smooth while cruising, no harsh rasp.
  
• Performance: Dyno-proven improved torque and throttle response. Aggressive deep and smooth tone while ensures smooth exhaust gas flow, increase engine output and efficiency.
  
• Design: JDM-inspired racing design built for both track performance and street use.
  
• Fitment: Includes gaskets and hardware for an easy, bolt-on or clamp-on installation.

Standard Warranty

All DNA Motoring products come with a 30-day limited manufacturer’s warranty covering defects in materials and workmanship under normal use. This warranty does not cover wear and tear, misuse, or improper installation.

⚠️ Extend Product Protection Recommended
To ensure peace of mind and protect your investment long-term, we strongly recommend purchasing an Extend product protection plan available during checkout. Extended coverage can offer added security & support beyond the standard 30-day warranty period.