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Your cart is empty.Flowmaster's FlowFX series mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the "chambered" muffler sound. The interior features a large 3.50-inch "straight-through" stainless steel perforated core, surrounded with high-temperature sound absorption materials delivering a deep traditional mellow tone. The internal flow design is reversible, so the muffler can be installed in either direction to best suit the vehicle application and offsets needed. Features include fully MIG-welded "bright" 409 stainless steel construction with the FlowFX logo embossed on both sides of the case. The FlowFX line of mufflers is perfect for the person looking for a show quality performance muffler at an economical price point and in a compact sized case.
TDWAREAGLE
Reviewed in the United States on February 13, 2025
I was looking for the right sound for my truck and this is exactly what I was looking for!
Chris
Reviewed in Canada on September 17, 2024
Fit properly onto my 2005 GMC sierra 2500HD Duramax Deisel. Added a bit of noise but wasn’t quite as much as I had hoped. You can hardly hear it from inside the truck but You can hear it more when you’re an onlooker while the truck hits max boost and roars a bit
Stephen Szabo
Reviewed in the United States on September 26, 2023
Takes a little of the raspiness away, I installed it at the end of my exhaust pipe. A lot quieter at idle, still very loud at WOT.
Jake
Reviewed in the United States on September 21, 2023
Great quality.. But with long tube headers on my 6.0 gas Silverado.. it's loooouddd... Bad drone.. sounds good. But not a good choice for daily or tow rig.
Taylor koeppen
Reviewed in the United States on March 21, 2023
Sounds great! It definitely isn’t aggressive. I have a power wagon with the 6.4 and it gets loud at higher rpm, but does drone at 2k rpm. But definitely very good sounding
Christopher
Reviewed in the United States on March 10, 2023
Fit 2007 gmc 2500 hd , sounds amazing not to loud but just right. Cut old muffler out got a piece of 3.5 inch pipe made a few cuts welded this one in and was done . Highly recommend if your want a deeper tone that’s not to loud and no popping sounds.
Jared
Reviewed in Canada on February 14, 2023
Not bad muffler. Fit my 6.2L silverado and it sounds pretty good. A little on the quieter side but still puts out that beefy V8 sound which was a step up on the stock muffler. 4 stars because the box arrived smashed up, muffler seemed ok though
Customer
Reviewed in the United States on October 12, 2023
Nice start up tone when cold and mellows out when warm. A decent drone but not obnoxious going down the road. Installation was easy and looks great under the truck. This is on a family HD truck for towing and hauling and I wanted something that wasn’t expensive and loud. Not in my 20’s anymore so loud noises do not appeal to myself or my family of 5. Thank you.
Olmstr
Reviewed in the United States on April 18, 2023
I had a lot of work done to my 2002 Chevy 2500HD 6.6 Turbo diesel. IE: new injectors, pressure lines ,Head gaskets, water pump radiator rear brakes and a new bearing. While it was being worked on I told them to loose the muffler, they did, it ran a lot better but, it also made way tooo much noise. Now I have a flow master straight through fiberglass packed muffler, still gives me a growl but not a nasty sound,
Michael Rosenstiel
Reviewed in the United States on July 22, 2022
Good value, couldn't justify $200 per muffler for the other brands. Dual 3.5" exhaust dumped at the rear axle is pretty obnoxious but it does give a deeper tone than a chambered muffler.
Chris M.
Reviewed in Canada on August 10, 2021
Good quality muffler for the money pretty loud on my truck but has a good rumble and drone in the cab is tolerable much better the the mbrp muffler that I replaced with this flow fx
Marc-antoine rousseau
Reviewed in Canada on July 30, 2021
Recommandé pour votre 6,2 gmc!!
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