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Your cart is empty.DynoMax® Ultra Flo™ Welded performance stainless steel mufflers feature 100-percent welded construction for lifelong durability. The unrestricted, straight-through design dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower. Each muffler uses our exclusive Continuous Roving Fiberglass (CRF) Technology to absorb unwanted interior resonance while maintaining a deep performance tone. The 'Pure Unadulterated POWER' of DynoMax® Ultra Flo™ Welded mufflers are backed by a Limited Lifetime Warranty and exclusive 90-Day Performance & Sound Guarantee™.
BillBillerson2
August 22, 2025
I have to say I like the sound of these mufflers. They're not exotic or super raspy, but they're not boring sounding like an OEM. I put them on my truck with a full dual 2.5" exhaust, no cats and stock cast exhaust manifolds. They're not super loud and don't drone like chambered mufflers (which is exactly what I wanted). Turbo mufflers really are the best flowing with a pretty much straight through design. There's no reason a car should be ridiculously loud for the sake of performance. I believe these are 409 stainless. They shouldn't rust much, but they're likely not going to last as long as a 304 muffler. For the price though, couldn't have done better for a welded stainless muffler that sounds good.
Customer
August 6, 2025
What an awesome muffler! Just from looking at it you would think it would be louder. Installed this on my yukon denali and it sounds so good. It has a low rumble to it and if you get on the gas it sounds off but it's not overly loud. While cruising on the highway it doesn't have that annoying low pitched rumble that other performance mufflers have. It makes my denali sound the way it's supposed to sound. Get one and you won't be disappointed!
edrica
July 19, 2025
This muffler flows great. At first when I installed it I couldn’t tell the difference between them and the magnaflow Andretti’s on my corvette. After a few drives the mufflers sound got deeper and deeper giving it that muscle car sound. I love these thingsIf you’re looking for that mustang flow master sound then these are not it. They do chop but not with that metal rattle sound. These things work great and let’s you’re vehicle breath!!!
Richard DiGrosso
July 15, 2025
Just the right Tone! 19 Camry v-6 with cut out one resonator ✔ï¸
safaripolice
July 10, 2025
Terrible whom ever purchased this first and returned in this condition.Not pleased!
James M.
July 4, 2025
Good solid quality construction. The inner flow tubes measures three inches on the 17222 muffler and necks reduce down to 2 1/2". These mufflers flow really well and I have seen some muffler charts on the internet showing flow rates of 101% of a straight pipe. The large 3" inner core and large spiralled perforations allow these mufflers to flow so well. Excellent exhaust technology from the guys at Dynomax. I will be installing these bad boys on my 475 hp 1994 Mustang GT really soon. I am currently running Ap Xlerator XS 1236 S/S mufflers. I have had these on for a little over a year now and seem to be getting really loud now. I should pick up some horsepower by switching to the Ultraflows. I just hope they don't blow out like the Xlerators.
Alando Baker
June 30, 2025
Product is good only giving it 3stars because I thought they would have a lil more rumble to them.
Danny C.
June 9, 2025
Espectacular y su sonido es excelente
Ghislain Hamel
April 24, 2025
beau son
len found
April 21, 2025
Like it alot.. love the sound .
Lance Don
February 1, 2025
3hrs of run time and split the muffler down the middle. What a headache.
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