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2012+ Civic Exhaust List With Product Links & Info


Toys For Tots
2012+ Civic Exhausts

Injen Axle Back For 2012+ Civic Si
(60mm Pipe w/3" Tip)
MSRP $420

Injen has always been great at getting maximum airflow into your motor. Now they have turned their attention to making exhaust systems to match that increased airflow for power gains across the RPM range of your Civic! Starting with 304 stainless steel each system is computer assembled from bending, to CNC'd flanges, through final assembly welding. This guarantees a great fit and consistent performance from every system. The Super SES exhaust systems utilize a flow through muffler for maximum power and an aggressive tone. Finally each exhaust is finished off with Injen's embossed flared tip design for show stopping looks to compliment the additional power.
http://www.injen.com/search.asp?stop=1&Year=2012&MakeID=2&ModelID=35&Eng=4 Cyl

View: http://www.youtube.com/watch?v=k4TX-bvJbyc

View: http://www.youtube.com/watch?v=niYq4JE0vUo


CT Engineering Stainless 2.5" Catback Exhaust (Coupe SI)
MSRP $695

This exhaust from CT Engineering (formerly Comptech USA) is perfect for Civic Si owners who want a performance exhaust that looks and sounds like something Honda should have put on the Si from the factory. Not too outrageous, but not too quiet, the CT Engineering exhaust is the perfect blend of power and refinement. As with all CT Engineering parts, the quality and design is second to none.

Key Features:
  • Full stainless steel, mandrel bent 2.5" cat-back exhaust system.
  • TIG-welded by hand (in-house) for only the finest quality welds.
  • Polished muffler, polished resonator, and 4" polished and resonated tip.
  • Smooth, aggressive tone refined for the street.

Skunk2 MegaPower Catback Exhaust (Coupe SI)
76mm Piping
MSRP $600

A properly designed exhaust system is critical to engine performance. Skunk2’s 76mm MegaPower RR Exhaust system for the 2012 Civic Si coupe was developed with this in mind and is based off of more than 15 years’ worth of racing experience. Dyno-proven for maximum horsepower, MegaPower RR systems are constructed of T-304 stainless steel, are robotically TIG welded, and feature CNC mandrel bends for a precise fit. The MegaPower RR for the 2012 Civic Si in conjunction with the Skunk2 Alpha Header for the 2012 Civic Si has seen hp gains above 30hp.

Designed for heavily modified naturally aspirated engines as well as for turbocharged applications that require more exhaust flow than Skunk2’s 70mm MegaPower R Exhausts provide, MegaPower RR Exhausts allow engines to breathe more efficiently and produce more power thanks to larger diameter piping. MegaPower RR Exhaust systems were designed for maximum flow and power, featuring oversized tubing and mufflers, which result in a significantly louder tone when compared to other MegaPower systems.

View: http://www.youtube.com/watch?v=VfGSwEomi9o




MagnaFlow Performance Catback Exhaust (SI)
MSRP $850
15058 - Sedan
15058 - Coupe ETA unknown

MagnaFlow performance exhausts are 100% stainless steel and lap-joint welded for solid construction and rugged reliability even in the most extreme conditions. The mufflers used in each MagnaFlow exhaust system feature a free-flowing, straight-through perforated stainless steel core, stainless mesh wrap, and acoustical fiber fill to deliver that smooth, deep tone. MagnaFlow mufflers outflow OEM chamber style mufflers by as much as 167%. In addition to this, MagnaFlow mufflers are packed tight with this acoustical material to ensure long life and no sound degradation over time.

Key Features:
  • 100% stainless steel, mandrel-bent exhaust system.
  • Reduces backpresure while maintaining a rich, powerful performance tone.
  • Features a dense wall of acoustical absorbing material to dampen out annoying exhaust frequencies.
  • Straight-through design prevents excessive heat retention allowing the entire system to run cooler and last longer.
  • Backed by a Lifetime Warranty.
sound clip -
View: http://www.youtube.com/watch?v=HDu0iaoFJH0

Installation PDF


GReddy EVO3 Catback Exhaust (Coupe SI)

70MM Piping 2.76" & 4" Tip
MSRP $695

Building on the ever-popular Evolution line, we are proud to introduce the GReddy Evo3, Evolution Exhaust System. The Evo3 was designed to provide the best combination of Performance and Sound. Retaining the same Evo muffler style and effective off-set Tip combination, the new Evo3 muffler overall diameter is now 10% smaller, but maintains effective sound suppression with a classic GReddy Evo sound. Each vehicle application is carefully studied and designed with larger piping diameters to maintain proper routing and flow for power, throaty sound at wide-open throttle and precise fitment and functional style.

View: http://www.youtube.com/watch?v=U_yg9y3jocg


FXRob sb2012si have this exhaust



Invidia N1 Catback Exhaust SI Coupe/SI Sedan

70mm Piping Diameter, 101mm Titanium Tip.
Sedan SI = HS12HC4GTT
Coupe SI = HS12HC2GTT
MSRP $676

Blending performance and price, the Invida N1 Exhaust is a modern interpretation of the classic N1 racing style exhaust. The Invidia N1 exhaust offers an aggressive sound and mid-range to high-end torque and horsepower gains. Invidia starts with full stainless, mandrel bent SUS304 stainless steel and adds CNC machined flanges for perfect fitment, and finishes with a light weight single wall muffler tip. The whole system is polished for a show stopping shine, and uses a burnt titanium or mirror polished stainless steel tip. Each Invidia N1 exhaust uses properly sized piping to maximize exhaust velocity while minimizing back pressure to maintain performance throughout the RPM range of your motor. When you're looking for the perfect blend of performance, price, and style, the Invidia N1 is the exhaust to turn to.

Key Features:
  • Designed to increase mid-range and top-end horsepower more than other exhausts.
  • Large primary piping diameter.
  • Full SUS304 polished stainless construction.
  • Full cat-back exhaust system.
  • Choice of Polished or Burnt Titanium tips.
  • Large muffler for sound control.
  • Bolt-on design for simple install.


Invidia Q300 Catback Exhaust - SI Coupe/ SI Sedan
70MM Piping Diameter, 110mm Diameter Tip
Coupe SI - HS12HC2G3S
Sedan SI - HS12HC4G3S

Blending a high flow, large diameter polished piping design with a full canister, continuous flow muffler, Invidia's Q300 system is one of the most powerful street oriented systems available. The start of the Invidia Q300 exhaust is polished SUS304 stainless steel which is mandrel bent in Invidia's state of the art production facilities. CNC made flanges are then robotically TIG welded to give exceptional fitment and durability. Lastly, the Q300 exhaust muffler is added to finish the exhaust off. This muffler uses a flat bottom design to maintain ground clearance on lowered cars, high absorption Advantex packing for a deep sporty tone, and dual walled titanium or stainless tips to dress up the appearance of your Honda Civic. Q300 systems work great on NA (naturally aspirated) and forced induction vehicles alike due to the optimized piping diameters for maximum power production with a daily driver friendly exhaust note.

Key Features:
  • Large primary piping diameter.
  • Full SUS304 polished stainless construction.
  • Full cat-back exhaust system.
  • Choice of Polished or Burnt Titanium tips.
  • Large muffler for sound control.
  • Robotically TIG Welded.
  • Race-style resonator (yields the most power).
  • Bolt-on design for simple install.
  • No silencer required for street use!
Invidia Q300 2012 Civic Si
View: http://www.youtube.com/watch?v=IMQ8jRcXYjM



Full-Race 3" Catback Exhaust (Coupe SI/Sedan SI)
MSRP $699

Full-Race has raised the bar for high-end 2012+ Civic exhaust systems. Made from high quality stainless steel materials and polished to a mirror finish, the Full-Race 3" exhaust will extract maximum performance from your K24Z7. This 3" exhaust is compatible ideal for all-motor naturally aspirated engines as well as superchargers and the Full-Race 9th Gen Civic EFR Turbo Kit

Honda 9th Gen Civic Si 3" Exhaust System Features
  • 3" Catback Exhaust System
  • Compatible with all motor, supercharged or turbocharged K24 engines
  • Includes all gaskets and hardware necessary to install
  • Decreases spool time and increases overall power on turbo applications
  • Plenty of clearance for various suspension components and chassis
  • Excellent fit and sound quality
  • This exhaust system is based off our wildly popular 8th Gen Civic Si Exhaust System
Installation DIY's

View: http://www.youtube.com/watch?v=Fj_mGAYoCtQ



Ultimate Racing 3" Catback Exhaust (Coupe SI/Sedan SI)
MSRP $550

Complete bolt-on catback exhaust system including 3" midpipe and performance muffler section
- 304 stainless steel piping
- 3/8" thick machined flanges
- High-flow performance muffler with straight through design
- Multiple tip options
- TIG welded to perfection
- Bolts directly to OEM catalytic converter location
- Midpipe available with or without Resonator or Secondary Muffler
- Available for Coupe or Sedan

View: http://www.youtube.com/watch?v=pTabpuHiG5I

View: http://www.youtube.com/watch?v=4JtLB1dMQEg



Tsudo Performance Catback Exhaust (Coupe SI/Sedan SI)
70mm Piping
MSRP $699

This catback features high-flow mandrel bent tubing with a straight-through mufflers which generates a smooth, deep sound and maximizes performance.

  • Manufactured from 100% stainless steel with silver polished finish.
  • T-304 stainless steel will never rust and provides the ultimate durability
  • CNC machine mandrel-bent 2.75" stainless steel tubing for maximum exhaust flow.
  • Single 70 mm piping
  • Robotic TIG welded.
  • Features 4.0 " slash cut exhaust tips.
  • Inner canister consists of steel wool and white fiberglass which provides lasting lifetime performance and consistent sound.
  • 25% lighter than stock OEM exhaust system.
  • Utilizes the factory exhaust hangars
  • Easy bolt-on installation with typical hand tools, no welding or cutting required.
View: http://www.youtube.com/watch?v=LNPqXc4W_XA

View: http://www.youtube.com/watch?v=bYB4JYxWMgU


Borla 2.25" Touring Exhaust (Coupe & Sedan non-SI)
MSRP $475

Built to Last...
Borla builds their cat back exhaust systems from 100% T-304 aircraft-quality stainless steel, which maintains true form and functions at all points for superior corrosion protection. Borla's world-class quality and performance capability are considered by many to be a very worthwhile investment, and Borla's One Million Mile Warranty proves they believe in their products.

View: http://www.youtube.com/watch?v=2UsPXZVKQ0c



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Toys For Tots
Borla 2.5" Catback Exhaust (Sedan SI)
MSRP $649.96
part # 140507

Borla cat-back exhaust 2.50" pipe - 2012 Honda Civic Si Sedan, oval tip.

View: http://www.youtube.com/watch?v=s98MsO-w1C0


GReddy SP Elite Catback Exhaust (Coupe SI)
70mm Piping
MSRP $ Unknown


PRL Motorsports OEM Look 3" Catback Exhaust
MSRP - Unknown


Last edited:


Well-Known Member
Columbia Station OH
Vehicle Model
Civic Si
Body Style
I am pretty sure that ultimate racing is my choice.. 3" with two options to control sound wish I could hear both options before buying.. big $ without hearing

i just watched a youtube video on UR for the 9th gen. it sounds like my old singlecam eg. really high pitched i thought....maybe it was just that video tho.


Toys For Tots
from a previous post of his -
...So the set up I will have is: U.R. 3" exhaust w/ the 2nd muffler option (instead of a resonator it's an additional muffler, so kinda like a single sided dual muffler if that makes sense) mated with a U.R. 3" DP w/ no cat option. Should sound loud BUT clean with the extra muffler on there.