ROUSH Performance® 421145 - Stainless Steel Axle-Back Exhaust System with Split Rear Exit

4 reviews|Item # mpn2463661898
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  • Remember to check your local or state laws regarding vehicle noise restrictions and Emission Standards.
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$729.99
In Stock (3) - Ships Tomorrow 07.15.26
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Vehicle Fitment

Ford

Specifications

Exhaust System Type
Axle-Back
Exhaust Tubing Material
Stainless Steel
Exit Location
Split Rear
Main Tubing Diameter
2.5"
Exhaust System Sound
Aggressive / Loud
Finish
Natural
Muffler Quantity
2
Muffler Body Material
Stainless Steel
Muffler Body Finish
Polished
Muffler Type
Louvered
Tip Quantity
2
Tip Finish
Polished
Tip Material
Stainless Steel
Tip Outlet Diameter
3.5"
Tip Shape
Round
Tip Style
Rolled Edge
Tip Cut Type
Slash-Cut
Catalytic Converter(s) Included
No
Muffler Configuration
Single inlet/Single outlet
Exhaust Type
Dual
Hardware Included
Yes
Inlet Quantity
Two
Difficulty
Intermediate
Time
1 hour
Tools
Garage Tools
Exit Location
Rear
Intermediate Pipe Diameter (in.)
2.50 in.
Muffler Finish
Polished
Muffler Included
Yes
Muffler Material
304 stainless steel
Muffler Quantity
Two
Muffler Style
Chambered
Quantity
Sold as a kit.
Remanufactured
No
System Finish
Natural
System Material
304 stainless steel
System Style
Rear axle-back
Tailpipe Diameter (in.)
2.50 in.
Tip Color
Polished
Tip Cut
Slant
Tip Edge Style
Rolled edge
Tip Included
Yes
Tip Material
409 stainless steel
Tip Outlet Size (in.)
3.50

Features

  • Upgraded aggressive sound tone and volume
  • Provides higher air flow and less back pressure for increased horsepower and torque
  • Unique open-chambered design
  • Chrome flashed 304 stainless steel exhaust tips
  • 409 stainless steel muffler and pipes
  • Check local noise ordinances for legality
  • Does not negatively affect emissions
  • No in-cockpit boom

Product Details

Stainless Steel Axle-Back Exhaust System with Split Rear Exit (421145) by ROUSH Performance®. Exhaust System Type: Axle-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 2.5". Exhaust System Sound: Aggressive / Loud. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.

Not only does this system sound awesome, it looks great as well! The round tips are made from high-quality 304 stainless steel and are finished with a chrome flashing process, and are embossed with the ROUSH logo on the end. This will let people know your car roars, and lets them know you mean business! Conventional chrome plating uses layers of bonded chemicals to achieve its shiny appearance, which are susceptible to cracking and flaking especially when exposed to high temperatures (like exhaust produces). However, the chrome flashing used in this system is bonded micro-porously to the metal surface, and is as a result impervious to cracking from localized damage. This method of chroming is also resistant to heat color change.

This exhaust kit mounts to the factory mounting points, and includes all necessary hardware and instructions. This makes for easy installation to get you back on the road in no time.

Part Number:
421145
UPC:
844764211452

Reviews

(4)
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/5
1-4 of 4 Reviews
5 of 5
Amazing Sound Upgrade
Louder than stock but in a good way - aggressive and sporty. Noticed a bit more power, but maybe its just placebo. It arrived quicker than I expected with all parts in perfect shape. Great buy!
ROUSH Performance® - Stainless Steel Cat-Back Exhaust System with Dual Rear Exit
Posted by Donald (Austin, TX) / February 07, 20252012 Ford Focus
4 of 5
Looks Great, but Quieter Than Expected
The fitment was not too tricky, but had a few moments of uncertainty. It was just a matter of lining everything up right at once before tightening. The sound is fantastic, it has the deep growl I was looking for, but It is definitely a lot quieter than I imagined for a cat back exhaust. At highway and constant speeds I can hardly hear it. When accelerating, it is there, but not all that impressive. The truck is so quiet stock that I guess it makes sense. The look is phenomenal, I love the dual tips. Overall I would expect this exhaust to be cheaper for what it provides being that Roush pretty much specializes in Ford, but I am still satisfied with the little bit of performance.
Posted by Brian (Temecula, CA) / July 15, 20212019 Ford Ranger
5 of 5
Great Product
I chose Roush because of the quality that I expected. NAILED IT!! I read reviews on many products and listened to many sound clips before choosing this system. This was a super easy product to install and I would say the install took about 1 hours to 1 1/2 hours and that is pushing it. Great sounding kit, I would recommend this product. Larry H.
ROUSH Performance® - Stainless Steel Cat-Back Exhaust System with Dual Side Exit
Posted by Larry (Smiths Grove, KY) / March 24, 20212013 Ford F-150
5 of 5
Amazing
I’ve had this exhaust for about a year on my Ford Focus SE, it has a really loud yet deep tone to it and I get a lot of compliments and people wondering how my car can make that noise it pops a lot sometimes even giving me multiple loud backfires the only downside is highway driving because there is a lot of drone something I’ve gotten used to and nothing a good radio can’t fix.
ROUSH Performance® - Stainless Steel Cat-Back Exhaust System with Dual Rear Exit
Posted by Connor (New Braunfels, TX) / March 30, 20202014 Ford Focus

Questions and Answers

(0)
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