PartSmith Co. supplies the Catback Exhaust System 4″ Round Muffler Tip For 06-11 Honda Civic FG2 Si Coupe 2.0L DOHC to drivers, shops and fleets across the USA.

Back pressure changes affect how the engine breathes, which is why matched components perform best. Support the pipe while tightening so the flange seats squarely.
Stock of the catback exhaust system 4″ round muffler is live on this page rather than estimated.
Shops order the catback exhaust system 4″ round muffler from us in volume because the data on the page is accurate.
If your build is unusual, tell us and we will confirm the catback exhaust system 4″ round muffler against it.
The catback exhaust system 4″ round muffler ships protected, because a damaged part helps nobody.
Drivers choose the catback exhaust system 4″ round muffler here for honest specification detail and quick dispatch.
Buyers comparing the catback exhaust system 4″ round muffler will find the specification detail on this page rather than in a catalog footnote.
Details that matter
- Engine: 2.0L
- Category: Major Pipe
- Price: $188.82 with free shipping over $99
- Availability: in stock, dispatched from the USA
Manufacturer specifications
Upgrading vehicle exhaust system is a great way to build horsepower, free up trapped torque, and improve upon restrictive factory systems. The larger pipes, low-restriction mufflers, and tuned resonators of a well-designed performance exhaust system can make a world of difference on your vehicle. The net result is lower auto exhaust backpressure, more horsepower, more torque, and a much better sound.
- Material: Stainless Steel
- Color: Metallic
- Finish: Polished
- Tube: 2.25″ Tubing
- Inlet/Outlet: 2.25″/2.25″
- Muffler: 4.00″ Round Muffler Tip
- TIG Welded CNC Machine Flange for Resistance against Pressure and Corrosion
- Aggressive Deep Sound while Ensures Smooth Exhaust Gas Flow
- Significant Driving Improvement: Designed for high performance as well as meeting sound level standards & deep throaty tone, Race-Inspired Straight-Thru Design piping for maximum air flow.
- Built to last: This Exhaust System designed and built with Quality & Last for long Life. Properly sized tubing for maximum flow and is finished off with a low restriction racing muffler. Made of the finest material that meets high endurance, light weight, and excellent fit.
- Performance: Improve overall performance, Increase Horsepower and Torque, Dyno Proven to Instantly Increases 10 -20 Horsepower/Low End Torque.
- This Exhaust System is engineered to fit the follow specific vehicle. Since the item is designated as Racing, Off-Road, Or Show Use Only, We Do Not imply or offer install warranty.
Application:
For 2006-2011 Honda Civic FG2 Si Coupe 2.0L DOHC
Remark:
Installation: Since the item is designated as Racing, Off-Road, Or Show Use Only, We Do Not imply or offer any warranty.
Product Content:
- 1x Catback System Kit
Hardware as Shown in the Picture Above
The product does not come with manual/instruction, Professional Install Recommended
Cross Reference Number:
- BFC-CATB-HC06SI
Fitment questions get answered by people who work with these parts daily, usually the same business day.
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Finished surfaces are wrapped and hardware is bagged, so the part arrives ready to install.
For safety and service guidance from outside the aftermarket, see the Car Care Council maintenance tips.
Frequently asked questions
Is fitment guaranteed on this listing?
Send your VIN or your year, make and model and our fitment desk confirms the part against manufacturer data before it ships. The check is free and usually answered the same business day.
Do you ship the same day?
Same business day dispatch applies to orders placed before the early afternoon cutoff, with tracking that updates at every carrier scan.
What is the return policy?
If the part does not fit, message our support desk with the order number and we will arrange an exchange or refund. Keep the packaging until the test fit is done.
What quality checks does this get?
We verify flange and diameter specification on exhaust orders before they ship.




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