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Flowmaster

Flowmaster 8425152 Super 10 Muffler 409S - 2.50 Center IN / 2.25 Dual OUT - Aggressive Sound, Black

    • Based on 426 reviews
Condition: New
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Availability: 16 left in stock
Fulfilled by Amazon
Arrives Saturday, Dec 21
Order within 8 hours and 21 minutes
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Features

  • Super 10 series
  • Super aggressive sound level
  • 409 stainless steel construction
  • Delta Flow technology for maximum scavenging effect
  • Outlet Diameter:2.250 inch
  • Fit type: Universal Fit

Description

Flowmaster's Super 10 Series 409S Stainless Steel - Single Chamber mufflers are intended for customers who desire the loudest and most aggressive sound they can find. Because these mufflers are so aggressive, they are recommended only for off highway use and not for street driven vehicles. These mufflers utilize the same patented Delta Flow technology that is found in Flowmaster's other Super Series mufflers to deliver maximum performance. Super 10 Series mufflers are constructed of 16-gauge 409S Stainless Steel and fully MIG-welded for maximum durability.


Brand: Flowmaster


Shape: Oval


Manufacturer: ‎Flowmaster


Brand: ‎Flowmaster


Model: ‎8425152


Item Weight: ‎6.69 pounds


Country of Origin: ‎USA


Item model number: ‎8425152


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Painted


Manufacturer Part Number: ‎8425152


OEM Part Number: ‎8425152


Date First Available: March 5, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Dec 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Perfect for 3:5 dodge charger
Took me weeks to decide which set up I should go with. Dual in dual out.... 2 single in single out..... or single in dual out, such as this one.. Decided to install this single in dual out on my 06 charger , with its factory 2.5 piping all around. The Inlet is 2.5 but outlet is 2.25, so I installed it only with this super 10 only, haven't done the whole dual rears yet, as I'm still deciding what to do... decided to do 2.5 pipe in rear and 2021 SRT stock factory rear exhaust on mine.... haven't done it yet and not sure how muffler shop will run 2.25 dual rear into 2.5 rear pipes.... place that only installed this super 10 did a janky job so I'll have to get it all set and done when I got the rest of the $$$ at a better muffler shop Super 10 was delivered in its own "flowmaster red box" and a shipping label was slapped on it, so be warned , everyone will see it during shipping and at your home.... (i thought to myself, their just gonna ship it in the Flowmaster box and just slap a shipping label to it, and they did" lol $99 for this was about right ... show more
Reviewed in the United States on July 8, 2023 by Black
    • Great sound not a DIY for a beginner
The media could not be loaded. I absolutely love the sound it’s given my Silverado and it fits great and sounds great. I didn’t receive the muffler with any damage to the casing or the box itself. I would recommend if your not well versed in welding or bending pipes (unless you bought a kit) don’t try this at home it’s not a plug and play type deal especially just buying the muffler itself. Overall I love flowmaster mufflers it’s a great all around muffler would recommend to anyone plus it’s a better deal on here then it is trying to get one flow the local parts store ... show more
Reviewed in the United States on March 24, 2023 by Collin Redman 96 ram
    • threw this onto my 3.5 Chrysler 300, it sounds GREAT.
Threw this onto an older 3.5 sxt mopar, it sounds great at idle, it almost has a choppy, cammed sound and really drowns out the "hair-dryer" sound coming from the engine bay that's VERY noticeable in stock form. I got rid of the resonator as well and this car is STILL quiet at idle and warm startups. But it does have a nice deep rumble to it, I get to avoid cops and have fun on my own. I'm not complaining. ... show more
Reviewed in the United States on November 25, 2022 by Alex
    • 😮💨😮💨
This muffler was PERFECT and gave a nice deep growl to the exhaust.. HIGHLY RECOMMENDED!!!!!!!!!!!!
Reviewed in the United States on March 4, 2023 by Dionne Swinton
    • Sorta Equivalent to an outlaw but has dual outlet
The media could not be loaded. Sounds great with my high flow cats on a 5.4 3v
Reviewed in the United States on March 12, 2023 by Rogelio Palomares
    • I recieved the wrong one.
Review Image by Ben Ben
The listing says this is the "2.50 Center IN / 2.25 Dual OUT" but I received the 2.50 Center IN / 2.50 Dual OUT" hopefully the people at the muffler shop can tailor the tube to fit this and then turn it into what I need (probably more money out of my pocket thanks to this mishap). BTW this is the second time I order something from Flowmaster/Holley and they always seem to miss somehow. Also all the mufflers I've received are MADE IN CHINA. I'm not super excited about American made products but if I see "MADE IN AMERICA/USA" I expect to receive the item made in the USA, don't you agree? ... show more
Reviewed in the United States on October 13, 2021 by Ben Ben
    • Great sound for 6 cylinder
Sounded great on my 2010 Nissan altima v6. It's super difficult to find a muffler that will make a 6 cylinder sound good but thankfully this one was perfect for my application
Reviewed in the United States on September 1, 2022 by Cj Crawford
    • but it certainly feels like it pulls you into your seat stronger
Installed on 2008 Ford Fusion V6 with k&n cold air intake, resonator and cat removed (header cats still in place) Put in place of the rear Y pipe, put in 2.5 inch pipes from the flowmaster to 3.5 inch tips out the back. Tone is surprising, certainly loud, deeper with more of the underwater rumble than you'd think the 3.0 can put out. Comparable sound to a v8 with a flowmaster 40 or so, not as loud as most muscle cars, but some. Performance is improved mostly with initial launch. I can't say if it added any actual power or improved any times because I have not tested either, but it certainly feels like it pulls you into your seat stronger. I'd recommend this to most people looking for a good sound that's got a respectable name without getting a raspy ricer fart can or buzz. I feel like youre buying a name with something like borla, when you can get the job done here without going as low as the 19.99 thrush clearance special. ... show more
Reviewed in the United States on May 3, 2017 by Tim M

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