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Flowmaster 40 Series Mufflers 42541

Muffler, American Thunder 40 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Aluminized, Each

Estimated Ship Date: Today Would you rather pick it up? Select Location

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Brand: Flowmaster

Manufacturer's Part Number: 42541

Part Type: Mufflers

Product Line: Flowmaster 40 Series Mufflers

Summit Racing Part Number: FLO-42541

UPC: 700042010332

Case Shape: Oval

Inlet Diameter (in): 2.500 in.

Inlet Quantity: One

Inlet Location: Offset

Outlet Diameter (in): 2.500 in.

Outlet Quantity: One

Outlet Location: Center

Internal Construction: Chambered

Muffler Material: Steel

Muffler Finish: Aluminized

Case Length (in): 13.000 in.

Overall Length (in): 19.000 in.

Thickness (in): 4.000 in.

Width (in): 9.750 in.

Outlet Style: Standard, without tip

Quantity: Sold individually.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Looking for the most aggressive sound in the Flowmaster muffler line? Then take a look at these 40 series Flowmaster mufflers. Designed for use on street and strip vehicles, they take the sound waves produced in the exhaust, and cancel them against angled baffles built into the muffler case. This improves both horsepower and fuel economy. Best of all, these Flowmaster mufflers allow you to hear that cool Flowmaster tone inside of the vehicle, as well as outside of it. So, if you want more power and less noise, then you've gotta get these Flowmaster mufflers.

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Dynomax Performance 33226 - Walker Lap-Joint Band Clamps

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Walker Exhaust 33240 - Walker Butt-Joint Band Clamps

Click here for more information about Walker Exhaust 33240 - Walker Butt-Joint Band Clamps

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Borla 18250 - Borla Stainless Steel Saddle Clamps

Click here for more information about Borla 18250 - Borla Stainless Steel Saddle Clamps

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Most Helpful Reviews Review this Product

8 Customer Reviews for Flowmaster 42541 - Flowmaster 40 Series Mufflers

Average Customer Review

5 Star

(4)

4 Star

(2)

3 Star

(0)

2 Star

(1)

1 Star

(1)
+See All 8 Reviews

great

Summit RacingSummit Racing Verified Purchase

I love the sound of flowmasrers always a great product.

1 of 1 found this review helpful.

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Reviewer: LUCAS from OR

Date: August 19, 2014

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FLOWMASTER 40 series (Fast Shipping)

Summit RacingSummit Racing Verified Purchase

Muffler sounds great and fast shipping. I would buy another

0 of 0 found this review helpful.

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Reviewer: JAKE from MI

Date: January 26, 2015

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Great sound!!!

Summit RacingSummit Racing Verified Purchase

These 40 series mufflers have the perfect sound and tone.Not too loud but they still roar when you stomp on the gas. Overall very happy with them

0 of 0 found this review helpful.

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Reviewer: ROBERT from WA

Date: December 08, 2014

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Flowmaster mufflers

great sound and construction

0 of 0 found this review helpful.

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Reviewer: ERIC from OH

Date: July 12, 2014

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Quality

BEST "MUFFLER" EVER

Summit RacingSummit Racing Verified Purchase

I've put these 40 series mufflers on almost everything I've owned: Mustang GT 5.0, Dodge Ram 2500 V-10, Dodge Ram 5.7 Hemi, and my K5 Chevy Blazer. I frickin' love em!!!

0 of 0 found this review helpful.

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Reviewer: VICKI from KS

Date: April 08, 2014

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Its aight

Summit RacingSummit Racing Verified Purchase

It seemed like it would be a loud muffler, but after installation to my truck (toyota T100) it is quieter than a mouse. I mean, my truck sounds like a Prius. But I suppose, it does do its job...

0 of 1 found this review helpful.

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Reviewer: NATHAN from ME

Date: September 12, 2014

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not loud enough

Summit RacingSummit Racing Verified Purchase

I have a ford 5.4 trition and I watched the youtube videos before I purchased this product, I am very disappointed. It almost is as quiet as my stock muffler, if I had to do it over again knowing what I know now, I would not purchase this product

0 of 3 found this review helpful.

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Reviewer: RUSSELL from IL

Date: March 24, 2014

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Not what I thought

Summit RacingSummit Racing Verified Purchase

Put this on my 99 Chevy 350 because I have heard it in person and liked the sound. The one I received sounds different very quiet quieter then stock! I didn't send it back because it had already been welded in.

0 of 4 found this review helpful.

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Reviewer: JARED from UT

Date: July 14, 2014

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Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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