downpipe-back

Flowmaster 17273 - American Thunder Downpipe Back Exhaust System

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$599.95

$666.95

You save: $67.00 (10%) off MSRP

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Check to see if this fits your vehicle

This part fits

  1. 1966 Ford Mustang Base 3.3L L6 cid:200 cc:3277
  2. 1966 Ford Mustang Base 4.7L V8 cid:289 cc:4727 Hardtop
  3. 1965 Ford Mustang Base 2.8L L6 cid:170 cc:2786
  4. 1965 Ford Mustang Base 3.3L L6 cid:200 cc:3277
  5. 1965 Ford Mustang Base 4.7L V8 cid:289 cc:4727 Hardtop
  6. 1964 Ford Mustang 2.8L L6 cid:170 cc:2786
  7. 1964 Ford Mustang 3.3L L6 cid:200 cc:3277
  8. 1964 Ford Mustang 4.3L V8 cid:260 cc:4261
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About this product

Part #: 17273

Flowmaster's 16 gauge mandrel bent pipe kits are designed to fit perfectly onto your vehicle with all the quality and performance that you would expect from Flowmaster.

More Details

Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Rear
Exit StyleStraight
Heat Shield AttachedNo
Inlet Diameter2.500 in.
MaterialAluminized Steel
Muffler Count2
Muffler Part Number942541
Muffler Series40 Series Delta Flow
Outlet Diameter2.500 in.
Outlet Outside Diameter2.500 in.
Single or DualDual
Sound LevelModerate
System TypeHeader Back
Tail Pipe Diameter2.500 in.
Tip Diameter2.500 in.
Tip Quantity2
TitleFlowmaster 17273 Header-back System - Dual Rear Exit - American Thunder - Moderate Sound
Tubing Diameter2.500 in.
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

Trace Butcher

595

Trace Butcher
1979 Ford F-150
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What made you choose this particular product?
Performance
What were you trying to accomplish by adding this product?
Sound
View on Trace's build
Christian Larsen

23

Christian Larsen
2015 Ford Mustang
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Once you’ve had a chance to use the product, did it meet your expectations?
It sounds good, but drones a lot when on the highway.
Any additional comments?
Probably going to run a Borla Stinger S-Type soon.
View on Christian's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Morr aggressive sound
What were you trying to accomplish by adding this product?
Improved exhaust note
Was it easy install? Any installation tips that will help others?
Professionally installed
Once you’ve had a chance to use the product, did it meet your expectations?
Yes
View on Deandre's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Reviews online and sound from YouTube videos
What were you trying to accomplish by adding this product?
Better exhaust note
Was it easy install? Any installation tips that will help others?
Took a couple hours to get everything mocked up, welded and hung. Overall an easy install. Did everything at home
Once you’ve had a chance to use the product, did it meet your expectations?
Awesome sound, very deep and not too loud
View on Josh's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
On the car when i got it.
Any additional comments?
Good sounding exhaust but a lil quiet for my taste.
View on Reggie's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About Flowmaster

Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.

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The Smoking Tire / The Drive

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