$64.00
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$$64.00 () Includes selected options. Includes initial monthly payment and selected options. Details
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Holley Performance Product
Ships from
Holley Performance Product
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Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. You may receive a partial or no refund on used, damaged or materially different returns.
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Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. You may receive a partial or no refund on used, damaged or materially different returns.
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11386-FM FLOWMONSTER 409SS OVAL CASE ABSORPTION MUFFLER

5.0 5.0 out of 5 stars 11 ratings
$64.00 with 10 percent savings
Typical price: $71.15

This is determined using the 90-day median price paid by customers for the product on Amazon. We exclude prices paid by customers for the product during a limited time deal.
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Purchase options and add-ons

Brand Flowmaster
Item dimensions L x W x H 20 x 9 x 4 inches
Vehicle Service Type Car
Material
Stainless Steel
Item Weight
0.1 Kilograms

About this item

  • 409 Stainless Steel construction for superior corrosion resistance and good looks
  • Interior construction features high-temp interior sound absorption material delivering a deeper, mellow exhaust tone
  • Perforated High-Flow straight-through tube design for increased exhaust flow
  • Moderate increase in interior tone over most OE mufflers
  • Internal Design is reversible allowing flexability to be installed in either direction
› See more product details

Buy it with

11386-FM FLOWMONSTER 409SS OVAL CASE ABSORPTION MUFFLER
$64.00
Get it May 9 - 10
In Stock
Ships from and sold by Holley Performance Product.
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3'' Mild Steel Custom Exhaust Kit Tubing Mandrel Bend Pipe Straight & U-Bend 16 Gauge Universal 8PCS
$106.99
In Stock
Ships from and sold by JY PERFORMANCE.
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ESEWALAS Stainless Steel Exhaust Clamp,2.0” 2.25” 2.5” 2.75” 3.0” 4.0” Butt Joint Exhaust Pipe Muffler Band Clamp Sleeve Coup
$9.99
Get it as soon as Friday, May 10
In Stock
Sold by Yvehicle and ships from Amazon Fulfillment.
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Top Brand: Flowmaster

Highly Rated
10K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
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Product Description

Unleash your Monster with Flowmonster 409 Stainless Steel performance mufflers! The Flowmonster series of absorption style mufflers deliver a moderate tone for the enthusiast looking for a deeper, more aggressive exhaust note than most OE (Original Equipment) mufflers, unlike the racey exhaust note associated with "chambered" style mufflers. Interior construction features 3.50 inch "straight-through" perforated 409 stainless steel tube surrounded by high-temperature sound absorption packing material which helps to deliver a deeper, mellower exhaust note. The internal design is reversible allowing the flexability to be installed in either direction to best accommodate fitment with the intended vehicle. The fully MIG-welded 409 Stainless Steel material is embossed with the "FlowMonster" logo on the case.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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11386-FM FLOWMONSTER 409SS OVAL CASE ABSORPTION MUFFLER

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What's in the box

  • Flowmonster 409Ss, Muffler 14X9X4X20

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    11386-FM FLOWMONSTER 409SS OVAL CASE ABSORPTION MUFFLER
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    Details
    Added to Cart
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    Added to Cart
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    Details
    Added to Cart
    Price-10% $64.00
    Typical: $71.15    		-24% $62.58
    List: $81.83    		$151.01$99.95-19% $225.96
    List: $277.99    		$53.90
    Delivery
    Get it May 9 - 10
    Get it as soon as Friday, May 10
    Get it as soon as Friday, May 10
    Get it as soon as Friday, May 10
    Get it as soon as Friday, May 10
    Get it May 10 - 13
    Customer Ratings
    5.05.0 out of 5 stars11
    4.64.6 out of 5 stars340
    4.54.5 out of 5 stars406
    4.74.7 out of 5 stars763
    4.54.5 out of 5 stars295
    4.44.4 out of 5 stars156
    Value for money
    —
    4.8
    4.3
    4.6
    4.1
    4.3
    Easy to install
    —
    4.7
    4.3
    4.4
    —
    3.5
    Mileage
    —
    —
    4.2
    4.3
    4.3
    —
    Sold By
    Holley Performance Product
    Amazon.com
    Amazon.com
    Amazon.com
    Amazon.com
    PEPE DEALS INC.
    compatible vehicles
    Car
    Car
    Car, Truck
    —
    Car
    Truck, Car
    material
    Stainless Steel
    Alloy Steel
    Stainless Steel
    Plastic
    —
    Alloy Steel
    weight
    0.1 kilograms
    12.33 pounds
    11 pounds
    6.5 pounds
    4 pounds
    9.25 pounds
    shape
    —
    Oval
    Oval
    Oval
    —
    Oval

    Looking for specific info?

    Customer reviews

    5 out of 5 stars
    5 out of 5
    11 global ratings
    Mellowed out my stock system
    5 Stars
    Mellowed out my stock system
    The stock system on my car was just a bit louder than I liked when the muffler valves were open. Replacing the stock midpipe's X + bullet resonators with a stamped X followed by this resonated X filtered out a bit more of the high frequency sound and reduced the overall volume, and at an excellent price. 9 months in and it doesn't seem to have lost any of its effectiveness.
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    Top reviews from the United States

    Lance Cheney
    5.0 out of 5 stars Mellowed out my stock system
    Reviewed in the United States on March 8, 2024
    Verified Purchase
    The stock system on my car was just a bit louder than I liked when the muffler valves were open. Replacing the stock midpipe's X + bullet resonators with a stamped X followed by this resonated X filtered out a bit more of the high frequency sound and reduced the overall volume, and at an excellent price. 9 months in and it doesn't seem to have lost any of its effectiveness.
    Customer image
    Lance Cheney
    5.0 out of 5 stars Mellowed out my stock system
    Reviewed in the United States on March 8, 2024
    The stock system on my car was just a bit louder than I liked when the muffler valves were open. Replacing the stock midpipe's X + bullet resonators with a stamped X followed by this resonated X filtered out a bit more of the high frequency sound and reduced the overall volume, and at an excellent price. 9 months in and it doesn't seem to have lost any of its effectiveness.
    Images in this review
    Customer image
    Customer image
    Helpful
     Report
    Carrie Hemming
    5.0 out of 5 stars Good quality
    Reviewed in the United States on March 4, 2024
    Verified Purchase
    Got rid of the hillbilly straight piped sound of a 6.0 LS engine.
    Helpful
     Report