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Flowmaster

Flowmaster 17119 American Thunder Crossmember-Back Exhaust Kit 2.5 Inch Aluminized Steel Compatible with 1964-1972 GM A-Body with V8 engines

Based on 31 reviews
Condition: New
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$799.95
Save $50.00 was $849.95

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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Nov 9
Order within 19 hours and 24 minutes

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At a glance

Condition
New
Dimensions
49 x 25 x 14 in
Weight
72.4 lb
Material
Aluminized Steel
Exterior Finish
Painted
Inlet Connection Size
2.5 in
Inlet Connection Type
Flange
In the box
Flowmaster 17119 Header-back System - Dual Rear Exit - American Thunder - Moderate/Aggressive

Features 9

  • Fits most 1964-1972 GM A-Bodies with V8 engines and aftermarket long tube headers.
  • Includes Hangers and Hardware for Easy Installation
  • Mandrel-bent 16-Gauge Aluminized Steel Tubing
  • Two Exit Style Choices: Slash Cut or Turndown

Specs 24

Material Aluminized Steel
Brand Flowmaster
Item dimensions L x W x H 49 x 25 x 14 inches
Exterior Finish Painted
Inlet Connection Size 2.5 inches
Inlet Connection Type Flange
Outlet Connection Type Flange
Number of Ports 1

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

Excellent
Style: Base Product
This fit perfectly on my 72 Chevelle SS! They even send extra hangers for earlier years! Directions were easy and made installation a breeze. The sound isn’t ignorant but as someone who like to hear the rumble of the exhaust it still has a lot of tone, sounds GREAT!
Reviewed in the United States on October 3, 2019 by Eric
Fit needs tweaking on an 1967 El Camino.
Style: Base Product
Hard to rate this one. Resaler was just fine. The kit itself...hum. First, one of the hangers was missing from the kit, but after a phone call, Flowmaster is sending me the missing part with no hassle. That's a draw. The kit itself is of nice quality, though some of the tube ends were a bit bent. But the shipper did have their way with the box which was large and heavy. So packaging could have been better. The instructions were OK, but could have had some better details like which way the H-pipe is to be oriented (angling down from the mufflers BTW) and which holes in the rear hanger to use in the lower frames holes (upper hanger holes BTW). The EC has stock air shocks in the rear and the over axil pipe ends up pretty close to the plastic fittings to keep the tail exit pipes straight with the body. This may end up melting the plastic shock air lines if there is no heat shielding added. Going to put some header wrap on there, but time will tell. The last was the kit was supposed to be a direct fit for a '67 El Camino. It is...after you go to the autoparts store to buy a couple of extensions and additional 2-1/2" clamps since the El Camino has a longer wheel base and it comes up about 3" or 4" short at the muffler outlet going over the rear axil. The rear clamps/hangers do not line up with the factory frame holes either and the tips are a few inches short of the back bumper (more extensions and clamps). This is all OK and fixable, but a heads up would be nice or maybe an EC supplement kit. I spent some money on a direct fit kit to avoid that kind of bother. In the end, it sounds exactly how I wanted with my little 283. It has a nice low grumble and a bit of bark without being obnoxious. The sound and quality are the long term aspect, thus it's a 4 star, -1 for installation hassle/fit. ... show more
Reviewed in the United States on September 27, 2021 by Thunder Flash
Excellent pipes
Style: Base Product
Beautiful mandrel bends. Easy to install by local shop. They said it was the best pre-formed kit they had ever installed. Sounds tighter that my pervious Flowmaster 40's.
Reviewed in the United States on October 13, 2021 by Exiled
Perfect
Style: Base Product
Fits well, and sounds even better.
Reviewed in the United States on February 4, 2025 by Curt Van Beek
327 Duntov sounds great!
Style: Base Product
good tight fitting pipes. clamp system kind of cheesy. good hangers,. had to squash down the crossover pipe to keep the drive line from banging on it, if you dont weld you might need to cut slits in some of the outer pipe connections to get them to clamp tight... also you may need 2.5 to 2.5" ID connectors to hook your collectors to these. ... show more
Reviewed in the United States on October 1, 2021 by Clinton G Whitman
Great Fit and Price
Style: Base Product
Took a few hours to install. Worked for my 67 Chevelle
Reviewed in the United States on September 12, 2022 by Raymie
Sounds fantastic! Ran into issues with the installation as the ...
Style: Base Product
Installed on 65 Chevelle with a 350. Sounds fantastic! Ran into issues with the installation as the instructions call for the wrong mounting bracket. Called Flowmaster and they helped me through the issue. I ended up having to use the bracket for a 67-72 Chevelle.
Reviewed in the United States on March 23, 2017 by Ben Pfeil
Noticeable power gain sounds great.
Style: Base Product
EXACTLY what I was looking for. Fit my 72 Chevelle perfectly. Took about 3 hours to install with a car lift. Simple & clean. Noticeable power gain sounds great.
Reviewed in the United States on April 23, 2018 by Schatgun
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