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T304 vs. T409: How Do These Stainless Steels Differ?

T304 Stainless Steel vs T409 Stainless Steel

What Does Stainless Actually Mean?

What’s Better, T409 or T304 Stainless Steel Exhaust Components?

Making the Right Exhaust Choice

Product Comparison


Flowmaster Exhaust Systems Magnaflow Exhaust Systems JBA Cat4ward Headers MBRP Exhaust Systems

Sale Price

From $229.99


From $310.15


From $142.88


From $199.99


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Customer Rating

Price/Value

Ease of Installation

Quality

Appearance

4.50 Average Customer Rating

(790)

4.5 4.5 4.5 4.5
4.50 Average Customer Rating

(841)

4.5 4.5 5.0 5.0
4.50 Average Customer Rating

(222)

4.5 3.5 4.5 4.5
4.50 Average Customer Rating

(178)

4.5 4.5 4.5 4.5

Design

Axle-Back


Cat-Back


Header-Back


Turbo-Back


Axle-Back


Cat-Back


Downpipe-Back


DPF-Back


Turbo-Back



Cat-Back


Downpipe-Back


DPF-Back


Turbo-Back


Finish

Unfinished


Unfinished


Ceramic-Coated


Chrome


Unfinished


Black


Unfinished


Material

Aluminized Steel


Stainless Steel


Stainless Steel


Mild/Carbon Steel


Stainless Steel


304 Stainless Steel


409 Stainless Steel


Aluminized Steel


Material Detail

409 Stainless Steel


409 Stainless Steel




Style

Dual Exit


Single Exit


Dual Exit


Single Exit



Dual Exit


Single Exit


Warranty

3-year warranty (aluminized steel)


Lifetime Warranty (stainless steel)


Lifetime Warranty


Lifetime Warranty


3-year warranty (black)


Lifetime Warranty


Lifetime Warranty (polished)


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Exhaust, Mufflers & Tips Customer Reviews

Flowmaster exhaust for an '03 Ford

Appearance
Ease of Installation
Price/Value
Quality

Reviewed by Dennis M. (Mattawan, MI) Reviewed for a 2006 Buick LaCrosse—2008-11-11 18:20:05

This was easy to install after the old muffler was removed. Came with good directions. Has a good sound but is a touch quiet for my taste. Overall, am happy with the outcome.

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Very happy with purchase

Appearance
Ease of Installation
Price/Value
Quality

Reviewed by John T. (Lockport, IL) Reviewed for a 1994 Acura Legend—2007-08-16 06:51:19

I've had the exhaust for a week now. The installation was very quick at a local muffler shop. Exhaust sounds great in town, with a nice low tone and not too loud, but not quiet. My only issue is when the MDS system kicks in at highway speeds, the change in exhaust tone is annoying. This is mentioned during the ordering process. If you have this type of engine, you will notice the MDS system kicking in with this exhaust. With the factory exhaust, the 8- to 4-cylinder change was invisible. During city driving, the exhaust is great but on the highway, not so much.

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