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Flowmaster - American Thunder Crossmember-Back Exhaust System (17655)

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$711.95

$791.95

You save: $80.00 (10%) off MSRP

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This part fits

  1. 1968 Chevrolet Impala 5.0L V8 cid:307 cc:5031
  2. 1968 Chevrolet Caprice 6.5L V8 cid:396
  3. 1968 Chevrolet Impala 5.0L V8 cid:307
  4. 1968 Chevrolet Caprice 7.0L V8 cid:427 cc:6998
  5. 1968 Chevrolet Caprice 7.0L V8 cid:427
  6. 1968 Chevrolet Caprice 6.5L V8 cid:396 cc:6489
  7. 1968 Chevrolet Impala 6.5L V8 cid:396
  8. 1968 Chevrolet Impala 6.5L V8 cid:396 cc:6489
  9. 1967 Chevrolet Impala 6.5L V8 cid:396
  10. 1967 Chevrolet Caprice 7.0L V8 cid:427 cc:6998
  11. 1967 Chevrolet Impala 6.5L V8 cid:396 cc:6489
  12. 1967 Chevrolet Impala 4.6L V8 cid:283 cc:4638
  13. 1967 Chevrolet Caprice 4.6L V8 cid:283 cc:4638
  14. 1967 Chevrolet Impala 4.6L V8 cid:283
  15. 1966 Chevrolet Caprice 4.6L V8 cid:283 cc:4638
  16. 1966 Chevrolet Caprice 7.0L V8 cid:427 cc:6998
  17. 1966 Chevrolet Caprice 6.5L V8 cid:396 cc:6489
  18. 1966 Chevrolet Impala 4.6L V8 cid:283 cc:4638
  19. 1966 Chevrolet Impala 4.6L V8 cid:283
  20. 1965 Chevrolet Impala Base 4.6L V8 cid:283 cc:4638
  21. show all...
Authorized Dealer

About this product

Part #: 17655

Flowmaster's American Thunder Cross Member Back exhaust system for the 1965-1968 Chevrolet Impala and Caprice is perfect for the person looking for an aggressive sound level inside and outside of the car, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR (Dual Out Rear) system features aluminized Super 40 Series mufflers and dual 2.50" tailpipes with a welded H-Pipe assembly. The system is finished off with a pair of 4.25" x 2.25" polished oval stainless steel tips. Like all Flowmaster systems, the pipes are all mandrel bent to reduce any restrictions and maximize performance. The system is covered by Flowmaster's 3 year Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation. Note: On Big Block cars, Flowmaster's 81075 Down Pipe kit can be used to connect to factory manifolds.

More Details

Catalytic Converter IncludedNo
ColorBlack
Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Rear
Exit StyleStraight
Heat Shield AttachedNo
Inlet Diameter2.500 in.
Inlet Inside Diameter2.500 in.
MaterialAluminized Steel
Mount TypeFlanged
Muffler Count2
Muffler Part NumberKit Only
Muffler SeriesSuper 40 Series
Muffler TypeWelded Baffle
Outlet Diameter2.500 in.
Outlet Outside Diameter2.500 in.
ShapeOval
Single or DualDual
System TypeCrossmember Back
Tail Pipe Diameter2.500 in.
Tip Diameter2.250 in.
TitleFlowmaster 17655 Crossmember-back - AMT - Mod/Agg Sound
Tubing Diameter2.500 in.
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

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?
It’s definitely louder but not too loud to where it’s annoying driving around
Is this your first time buying from this brand? Did you consider other brands?
Yes but flowmaster had the best sounding in my opinion and was all metal
Was it easy to install? Any installation tips that will help others?
They cut out the old one and put in the new in a few minutes
View on Ryan'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?
sound and build quality
Is this your first time buying from this brand? Did you consider other brands?
no
Was it easy to install? Any installation tips that will help others?
yes, pretty straight forward install. make sure there is clearance in height (preferably have it on a lift) for the muffler section to the tail pipe as there is considerable bend to manipulate in order to remove it. Also, just unbolt the hanger vs pilling off the gromet, seemed much easier to do.
Once you've had a chance to use the product, did it meet your expectations?
yes.
Any additional comments?
gauging sounds both in and outside of cab. with the headers, no resonator, and an overall diameter increase to a single 3 1/2" (4" tail), even with the 50 series HD muffler, it is surprisingly alot louder.
View on Adm'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?
It came installed on the car when I purchased it.
Is this your first time buying from this brand? Did you consider other brands?
First time with this brand. I would consider going to Magnaflow or Borla again, although the Flowmasters do sound amazing, they are a bit loud for normal use.
Was it easy to install? Any installation tips that will help others?
Came installed on the car, but the fit is good.
Once you've had a chance to use the product, did it meet your expectations?
These make the car sound very aggressive, you can hear the car coming from the other side of my small town. So they sound bad ass...but can be annoying for your neighbours and police.
View on Brett'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?
Previous owner installed it.
Is this your first time buying from this brand? Did you consider other brands?
Yes but it looks and sounds awesome!
Once you've had a chance to use the product, did it meet your expectations?
Sounds amazing for a v6
View on Nate's build
Devin Telschow

41

Devin Telschow
2008 Ford Mustang
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?
I wanted to make my car a bit louder without breaking the bank
Is this your first time buying from this brand? Did you consider other brands?
Yes
Was it easy to install? Any installation tips that will help others?
It was super easy. The install required only handheld tools and about an hours worth of time.
Once you've had a chance to use the product, did it meet your expectations?
It exceeded my expectations and provided a really nice sound.
View on Devin'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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Matt Farah

Smoking Tire / The Drive

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Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

James M.

Ford Focus ST

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Your customer service is wonderful. Thank you for taking care of this. My review will express all. Thank you!

Wallace R

Chevrolet Silverado 1500