MagnaFlow Cat-Back Exhaust System 2-1/2" With 4-1/2" Polished Tips Stainless Steel Focus ST 2013-2018

MagnaFlow:
15155
MagnaFlow Cat-Back Exhaust System 2-1/2" With 4-1/2" Polished Tips Stainless Steel Focus ST 2013-2018 is rated 4.5 out of 5 by 2.
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Highlights

  • 2.5" Mandrel Bent Tubing
  • Dual 4.5" Polished Tips
  • Direct Bolt On Installation
  • Stainless Steel Construction
MSRP $1,055.16
$719.43
You save 32%

MagnaFlow 2-1/2" Stainless Steel Cat-Back Exhaust System with 4-1/2" Polished Tips for 2013, 2014, 2015, 2016, 2017 and 2018 Focus ST.

MagnaFlow's cat-back system consists of 2-1/2" mandrel bent stainless steel tubing. All parts are welded together and built to last. A 5"x14" resonator sits in front of a 5"x14" muffler which creates a smooth and deep exhaust tone. Dual 4-1/2" polished tips exit the center of the rear bumper. Not only does the Magnaflow cat-back provide your Focus ST with a great exhaust sound, but it increases the horsepower of the 2.0L turbocharged engine.

Features:
- 2-1/2" Stainless Steel Tubing
- Dual 4-1/2" Exhaust Tips
- Fully TIG Welded
- CNC Machined Flanges
- Direct Bolt-on

Please Note: Ford designed the 2015 Focus ST with four exhaust hangers but only added three on the factory exhaust system. All aftermarket exhaust systems are built to use that fourth exhaust hanger. CJ Pony Parts recommends the purchase of COBB’s Polyurethane Exhaust Hanger Kit (591001).

Let this be one of the first modifications you make on your Focus ST. Upgrading the exhaust increases horsepower and provides a louder exhaust note that will be like music to your ears. MagnaFlow's cat-back bolts in place of your original exhaust. Just like all MagnaFlow products, this exhaust system features high-quality components for long lasting life. Made in the USA!

One of the keys to a great sounding and high performing Focus ST is finding and installing a good exhaust. Once you make this upgrade, enjoy your fantastic new sound as you cruise down the highway.

Order a MagnaFlow 2-1/2" Stainless Steel Cat-Back Exhaust System with 4-1/2" Polished Tips for your 2013, 2014, 2015, 2016, 2017 or 2018 Focus ST today!

Installation Difficulty

Moderate
Moderate

Intermediate skill is required for this installation.

Installation Videos

Vehicle Fitment

This product will fit the following Focus years:

Rated 5 out of 5 by from Just right 15 ST. Installed yesterday, easy install. Was concerned after having a Roush system on the 14 ST that was a droner, big time. There is a difference between loud and drone, drone hurts the ears.. Luckily still had the OE to put back on, the dealer didn't want the Roush at all for the trade in. The Magnaflow is great. Just a little louder than stock at idle, can barely tell it's there cruising at any speed on the highway. Open it up and it gets loud and sounds great. No drone at all. No yelling to have a conversation. It would be great to see a video of all these systems in action to compare.
Date published: 2016-02-28
Rated 4 out of 5 by from Great Sound! Perfect Volume! Tips Could Be Better This is long but it is important to read this entire review before purchasing! SOUND I first ordered and installed the MBRP 3" Cat Back for my 2018 Focus ST. It had a good sound outside of the car but had a very bad drone inside the cabin at highway speeds. So I quickly decided to try another option and ended up giving the Magnaflow a try. I am very glad I did. I would describe the sound of the Magnaflow as a very adult sounding exhaust. It has a great pitch and sounds amazing but at a very reasonable decibel level. Unless you are on full throttle it is pretty much nonexistent inside the cabin. It is perfect if you spend any time on the highway. There is absolutely no drone in the cabin. Just a sporty note when you get hard on the throttle. Outside it has a wonderful sound, but nowhere near loud enough to upset the neighbors. To me the Magnaflow sounds like what the car should have sounded like from the factory. Build Quality & Packaging I have nothing bad to say about the build quality or packaging. As with many other Magnaflow exhausts I have had for various cars in the past, this catback has a great build quality. All the welds look solid and it is all high quality stainless steel. It was very tightly packaged and there was no way anything was moving around inside the box during transport. It came with all required mounting hardware and decent directions. *This kit DOES NOT come with a new high temp gasket. You can reuse the factory gasket where it bolts up to the cat but I recommend ordering a new one as it is easy to damage the factory gasket when uninstalling the stock exhaust components. *While you can reuse the factory exhaust hangers, I would still recommend purchasing the Cobb Polyurethane Kit as they are much more robust and solid then the factory hangers. Also if you are installing on a 2015-2018 model, there are only 3 factory exhaust hangers and this kit makes use of 4 to be completely stable and not move around. A loose exhaust system can cause unwanted rattling underneath the car. It's not a must, but you should! THE NOT SO GOOD But it is not all good unfortunately. The reason for only getting 4 stars is because of the tail section and the tips themselves. They just don't look that great and they don't fit into the cutout of the factory rear valance very good. The main issue is they are angled down and sit too low leaving a very big gap between the valance and the tips themselves. It looks pretty ugly to be honest. I noticed it immediately and there is no adjustment to this as it only bolts up one way. The other issue is the tips themselves. It's hard to explain but something about them just does not scream "sporty." The design leaves something to be desired. See the pics that I have provided below. For myself I will rectify that by having a custom tip welded in that fits better with the cars overall appearance. Overall I am very pleased with this kit and the tips are not a deal breaker when compared to the sound that this kit provides. I highly recommend it to anyone looking for a slightly louder exhaust note over factory without being intrusive to the actual driving experience.
Date published: 2018-05-23
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I am in South Bend Indiana, how will this stand up to salt and snow. I have a 2013 Focus ST 

Asked by: jtalker1965
ive had mine on for 4 years in upstate ny where we get plenty of snow and use road salt, ive driven it every winter also, and you will get surface rust and pitting, but its definitely solid still, a full 304 stainless would be best if you can afford the premium tag, can't beat the sound though
Answered by: Sonicaceman
Date published: 2018-06-13

Are the exhaust tips for this removable?

Asked by: dudex007
The tips on part # 15155 are not removable.
Answered by: Magnaflow
Date published: 2019-08-08

Would this fit a 2016 Focus SE

Asked by: Jwill10
It would not be a direct fit because of the different rear bumper cover.
Answered by: rk cjpp
Date published: 2017-08-28

Is this the revised version? I know the original had fitment issues. Rattling on the cross brace and hanger issues with rear suspension.

Asked by: Ghost18
This will be their most up to date version if they had made any rolling changes to the design to improve fitment, but we are not aware of any changes. We have sold this kit for over 3 years and I have never heard of any issues like what you had mentioned.
Answered by: CJPP Dave
Date published: 2017-02-06

Is this part # 15155? Is this T304 I'm in PA and do not want to buy anything that is T409..thanks

Asked by: DMAR
It is 409 Stainless Steel Construction
Answered by: CJPP Dave
Date published: 2016-12-29

is there a possebiliti to buy just the tail pipe end (nr3).

Asked by: focusst3
We just offer the full cat-back.
Answered by: CJPP Dave
Date published: 2016-01-12
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