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KEF Magnaflow Performance 11386 Mflr Mag Ss 14X4X9 2.5D/D P13958117KEF-M6611386 https://cdnimages.opentip.com/full/KEF/KEF-M6611386.jpg Magnaflow Performance 11386 Mflr Mag Ss 14X4X9 2.5D/D Manufacturer Part Number: 11386Exhaust Muffler; 4 Inch x 9 Inch Satin Stainless Steel Case; Dual 2-1/2 Inch Inlet; Dual 2-1/2 Inch Outlet; 14 Inch Body/ 20 Inch Overall LengthAttributes Shape: Oval Inlet Position: Offset Dual Inlet Diameter (IN): 2-1/2 Inch Outlet Position: Offset Dual Outlet Diameter (IN): 2-1/2 Inch Case Diameter (IN): 9 Inch X 4 Inch Case Length (IN): 14 Inch Overall Length (IN): 20 Inch Includes Tip: No Tip Finish: No Tip Estimated Install Time (Hours): 1 Color/ Finish: Bare Material: Stainless Steel Wall Type: Single Wall Internal Construction: Straight Through Perforated Tip Length (IN): No Tip Tip Diameter (IN): No Tip Tip Material: No Tip Product Description MagnaFlow performance mufflers are 100 Percent stainless steel and lap joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free flowing, straight through perforated stainless steel core, stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep tone. Mufflers are packed tight with this acoustical material unlike some others products to ensure long life and no sound degradation over time. Backed by a limited lifetime warranty.Features & Benefits MagnaFlow Performance Mufflers Are 100 Percent Stainless Steel They Are Lap Joint Welded For Solid Construction And Rugged Reliability Even In The Most Extreme Conditions They Feature A Free Flowing, Straight Through Perforated Stainless Steel Core, Stainless Mesh Wrap And Acoustical Fiber Fill To Deliver That Smooth, Deep Tone Mufflers Are Packed Tight With This Acoustical Material Unlike Some Others Products To Ensure Long Life And No Sound Degradation Over Time All Mufflers Are Reversible For Custom Installation Limited Lifetime Warranty 13958117 841380000729 14.0000lbs 0.00 0.00 0.00
Magnaflow Performance
152.0000 2025-07-14 155 In Stock
customer review - by , September 9, 2023
5/ 5stars
This Magnaflow product has to be my favorite after much consideration I chose to go with this for my 2014 Jeep grand Cherokee 5.7 and it sounds amazing and aggressive tone 10/10 recommend
customer review - by , May 5, 2023
5/ 5stars
Cuts are straight as an arrow. The welds are great. The quality of the steel is great. The packing material is great.The price reflects these traits
customer review - by , December 12, 2022
5/ 5stars
I had a true dual exhaust with cheaper mufflers installed. After installing this it made a huge difference, no more drone or ridiculously loud exhaust. It's the perfect volume and sounds very aggressive. My Chevy 350 sounds like a race car, I very highly recommend
customer review - by , November 11, 2022
5/ 5stars
Si son como lo esperaba se los recomiendo
customer review - by , August 8, 2022
5/ 5stars
this is awsome no muffler on my car but this and sounds grate i have a v6 camaro 2019 as it burns in it gets better
customer review - by , August 8, 2022
5/ 5stars
Removed the stock mufflers and resonator and used this xpipe muffler to replace the stock X pipe on my 09 Maserati Granturismo. Wasn't about to pay several thousand for a Larini exhaust. Some drone right at 2100rpm but otherwise no drone at any other RPM. Fantastic sound, opens things up and makes it truly sound like a 4.2 Italian V8. Deep and aggressive but more refined than an American V8 (not that there's anything wrong with that sound either) muffler build quality is excellent, which is to be expected from Magnaflow. Excellent welds and stainless steel, not worried about longevity. Magnaflow is always more expensive than it should be but it still beats the alternative. No noticeable power change either direction.
customer review - by , July 7, 2022
5/ 5stars
Not to loud not to quiet. Installed on 5.0 coyote
customer review - by , June 6, 2022
5/ 5stars
Installed on my 2018 Taurus SHO with PPE downpipes and MRT axle-back. This was the final peace of the puzzle and the music coming out of the tips puts a smile on my face everytime.
customer review - by , June 6, 2022
4/ 5stars
Purchased this for my GM 3.4l hoping to get a good rich sound without the drone. My mistake. Very good quality but just too loud for my liking and the drone is unbearable.
customer review - by , May 5, 2022
5/ 5stars
Seems well made putting on my 1988 Chevy K1500 pickup, LS1 swap.
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Magnaflow Performance 11386 Mflr Mag Ss 14X4X9 2.5D/D

stars Rating 5 | 20 reviews
Brand Magnaflow Performance
Shop more from KEF
UPC: 841380000729
SKU: KEF-M6611386
List Price: $204.47
Price: $152.00
You Save: $52.47 (26%)
Quantity:
155 In Stock
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Product Description

Manufacturer Part Number: 11386

Exhaust Muffler; 4 Inch x 9 Inch Satin Stainless Steel Case; Dual 2-1/2 Inch Inlet; Dual 2-1/2 Inch Outlet; 14 Inch Body/ 20 Inch Overall Length

Attributes

  • Shape: Oval
  • Inlet Position: Offset Dual
  • Inlet Diameter (IN): 2-1/2 Inch
  • Outlet Position: Offset Dual
  • Outlet Diameter (IN): 2-1/2 Inch
  • Case Diameter (IN): 9 Inch X 4 Inch
  • Case Length (IN): 14 Inch
  • Overall Length (IN): 20 Inch
  • Includes Tip: No
  • Tip Finish: No Tip
  • Estimated Install Time (Hours): 1
  • Color/ Finish: Bare
  • Material: Stainless Steel
  • Wall Type: Single Wall
  • Internal Construction: Straight Through Perforated
  • Tip Length (IN): No Tip
  • Tip Diameter (IN): No Tip
  • Tip Material: No Tip


Product Description


MagnaFlow performance mufflers are 100 Percent stainless steel and lap joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free flowing, straight through perforated stainless steel core, stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep tone. Mufflers are packed tight with this acoustical material unlike some others products to ensure long life and no sound degradation over time. Backed by a limited lifetime warranty.

Features & Benefits

  • MagnaFlow Performance Mufflers Are 100 Percent Stainless Steel
  • They Are Lap Joint Welded For Solid Construction And Rugged Reliability Even In The Most Extreme Conditions
  • They Feature A Free Flowing, Straight Through Perforated Stainless Steel Core, Stainless Mesh Wrap And Acoustical Fiber Fill To Deliver That Smooth, Deep Tone
  • Mufflers Are Packed Tight With This Acoustical Material Unlike Some Others Products To Ensure Long Life And No Sound Degradation Over Time
  • All Mufflers Are Reversible For Custom Installation
  • Limited Lifetime Warranty

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Shipping Restrictions

This product can't be shipped to the following regions: CA.
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Customer Reviews
5 out of 5
see all 20 reviews
5 stars
18
4 stars
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Write a Review
By damian padron
Date: September 18, 2023
This Magnaflow product has to be my favorite after much consideration I chose to go with this for my 2014 Jeep grand Cherokee 5.7 and it sounds amazing and aggressive tone 10/10 recommend
Rating: 5 stars [5 of 5 Stars!]
By A Customer
Date: May 13, 2023
Cuts are straight as an arrow. The welds are great. The quality of the steel is great. The packing material is great.The price reflects these traits
Rating: 5 stars [5 of 5 Stars!]
By Ryan
Date: December 29, 2022
I had a true dual exhaust with cheaper mufflers installed. After installing this it made a huge difference, no more drone or ridiculously loud exhaust. It's the perfect volume and sounds very aggressive. My Chevy 350 sounds like a race car, I very highly recommend
Rating: 5 stars [5 of 5 Stars!]
By Raul Miranda Serrano
Date: November 24, 2022
Si son como lo esperaba se los recomiendo
Rating: 5 stars [5 of 5 Stars!]
By Jim McClelland
Date: August 28, 2022
this is awsome no muffler on my car but this and sounds grate i have a v6 camaro 2019 as it burns in it gets better
Rating: 5 stars [5 of 5 Stars!]
By Scott D
Date: August 05, 2022
Removed the stock mufflers and resonator and used this xpipe muffler to replace the stock X pipe on my 09 Maserati Granturismo. Wasn't about to pay several thousand for a Larini exhaust. Some drone right at 2100rpm but otherwise no drone at any other RPM. Fantastic sound, opens things up and makes it truly sound like a 4.2 Italian V8. Deep and aggressive but more refined than an American V8 (not that there's anything wrong with that sound either) muffler build quality is excellent, which is to be expected from Magnaflow. Excellent welds and stainless steel, not worried about longevity. Magnaflow is always more expensive than it should be but it still beats the alternative. No noticeable power change either direction.
Rating: 5 stars [5 of 5 Stars!]
Items 1 - 6 of 20 reviews
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