Flowmaster 425404 40 Series Muffler - 2.50" IN(D)/OUT(D) - Aggressive Sound
Flowmaster 425404 40 Series Muffler - 2.50" IN(D)/OUT(D) - Aggressive Sound
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Flowmaster

Flowmaster 425404 40 Series Muffler - 2.50" IN(D)/OUT(D) - Aggressive Sound

|8 ratings
Check if this fits your vehicle

Key item features

  • No internal packing to blowout
  • Excellent Street/Strip and Off Road application
  • Aggressive Sound Exterior Exhaust Tone
  • Durable fully welded 16 gauge aluminized steel
Current price is $101.95
Price when purchased online
  • Free shipping
  • Free 90-day returns

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Arrives by Tue, Jul 7
Sold and shipped by Walmart.com
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Starting from $101.95
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Customer ratings & reviews

4.9 out of 5 stars
stars
8 ratings6 reviews
How item rating is calculated
  1. 5 stars88% (7)
  2. 4 stars13% (1)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star0% (0)
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Showing 1-3 of 6 reviews

Oct 5, 2025
Rob R
5 out of 5 stars review

Seller Verified Purchase

Flowmaser 40 muffler for Dodge Challenger R/T.

I ordered a Flowmaster 40 muffler for my 2010 Dodge Challenger r/t after the Dodge dealer said original muffler was discontinued. Turns out the Flowmaster is an exact fit. The Hemi sounds great. Not too loud and sounds like a musclecar should. I've bought parts from Jegs for 30 years and have always gotten great parts at great prices.

Review from jegs.com
Helpful?7KPEH14L9T1I198227418
Mar 25, 2017
KENNETH H
5 out of 5 stars review

Seller Verified Purchase

You have to own these. Matches my Harley sound now.

Easy directions. Put this cat-back on in a couple of hours. Taking my time. Perfect fit. All parts were in the box. Quality product that sounds great. Welded up when finished as Flowmaster recommends. [This review was collected as part of a promotion.]

Review from jet.com
Helpful?7KPEH14L9T1I198227418
Jun 13, 2023
lisa
Walmart Associate
Sold bySuperShops
5 out of 5 stars review

Verified Purchase

Happy muffler customer

This item is just as we wanted. It was like half the price at Walmart than anywhere in my town. It fit perfectly. The delivery was a day earlier than scheduled.

Incentivized Review
Helpful?7KPEH14L9T1I198227418