• Invidia 12-13 Civic Si Coupe N1 Titanium Tip Cat Back Exhaust | HS12HC2GTT

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N1 Titanium Tip Cat-Back Exhaust

Fits: 12-15 Civic Si Coupe

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Pay over time available · Est. $24.97/payment
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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

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Invidia N1 Titanium Tip Cat-Back Exhaust
Fits: 12-15 Civic Si Coupe
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Fitment

Please Note: Fits 2012-2015 Honda Civic Si Coupe (9th gen — there was no US 2016 Civic Si). Invidia N1, part HS12HC2GTT: 70mm piping, 101mm burnt titanium tip. Corrected 2026-10-06: a prior cleanup had applied 2012-2016 per invidia-usa.com; dealer year-breakdown tables (Procivic, GBP Performance, STM Tuned, K Series Parts) unanimously list 2012-2015. Invidia N1 cat-back, part HS12HC2GTT: 70mm (2.76-inch) T304 stainless steel piping (1.5mm wall), cannon-style N1 muffler, 101mm burned titanium tip, removable silencer included; gaskets and hardware included. Note: Invidia also makes a 76mm coupe version (HS12HC2STT) and sedan versions (HS12HC4GTT 70mm / HS12HC4STT 76mm); this listing is the 70mm coupe system. Store's fitment bucket list has no 2012-2016 entry; closest valid bucket is 2012-2015 Honda | Civic Si.
  • 2012-2015 Honda | Civic Si

Description

The Invidia N1 Titanium Tip Cat-Back Exhaust for the 2012-2015 Honda Civic Si Coupe (2.4L K24) is a single-exit system with maximum flow and minimal back pressure. Made from T304 stainless steel with 1.5mm wall thickness and robot TIG welding, it features 70mm (2.76-inch) mandrel-bent piping feeding a cannon-style N1 muffler finished with a 101mm burned titanium tip. Hangers are welded on the OEM locations for a direct replacement fit, and the system delivers strong mid to top-end power gains with Invidia's signature aggressive N1 note.

  • Fits 2012-2015 Honda Civic Si Coupe (2.4L K24Z7); dealer application tables (Procivic, GBP Performance, STM Tuned) unanimously list 2012-2015
  • 70mm (2.76-inch) mandrel-bent T304 stainless steel piping, 1.5mm wall; single-exit cannon-style N1 muffler
  • 101mm burned titanium tip
  • Robot TIG-welded construction with CNC-machined flanges; polished finish
  • OEM-location hangers for direct bolt-on fit; new gaskets, hardware, and a removable silencer included
  • Strong mid to top-end power gains with increased horsepower, torque, and throttle response
  • Invidia part number HS12HC2GTT

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