SKU: 36055486524

Flowmaster 717977 FlowFX Extreme Cat-Back Exhaust System

Sale price$224.10 Regular price$249.00
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Flowmaster 717977 FlowFX Extreme Cat-Back Exhaust SystemFlowmaster introduces our FlowFX Extreme stainless steel cat back exhaust systems for the 2014 2019 and 2019* 2021 (*new body) Chevrolet GMC Silverado Sierra 1500 trucks with the 4. 3 and 5. 3 liter engines. These systems use a FlowFX series muffler for an aggressive to moderate sound level and increased performance. 3. 00 inch mandrel bent 409 stainless steel tubing allows for maximum exhaust flow and durability. The systems have a turndown style,

Flowmaster introduces our FlowFX Extreme stainless steel cat-back exhaust systems for the 2014-2019 and 2019*- 2021 (*new body) Chevrolet/GMC Silverado/Sierra 1500 trucks with the 4.3 and 5.3-liter engines. These systems use a FlowFX series muffler for an aggressive to moderate sound level and increased performance. 3.00-inch mandrel bent 409 stainless steel tubing allows for maximum exhaust flow and durability. The systems have a turndown style, dump exit right after the muffler to eliminate the over-axle tailpipe. This elimination of the tailpipe helps improve ground clearance and departure angle when you are driving in more extreme off-road situations. Max dyno gains of 15 hp and 20 lb-ft at the rear wheels with the 717977 kit. All of the necessary hardware is included, and factory- mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 36055486524

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4.6 ★★★★★
Based on 23 reviews
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Verified Purchase
D. W.
Waukegan, US
★★★★★ 5
Best Bang for your Buck
Size: 59 inches, Size: 59 inches
Bought this almost a year ago for my 2018 silveraldo 1500 and it's very handy for big groceries shopping like Costco. I have a mat at the bottom just in case there's some kind of liquid and I dont want my groceries touching it. Easy install, store a good amount of stuff, and pretty sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
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Verified Purchase
Nikkycollado
Draper, US
★★★★★ 5
Great fit
Nice utility accessories
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Reviewed in the United States on April 24, 2026
K
Verified Purchase
Kitchengal
Chelsea, US
★★★★★ 5
I'd buy it again
Size: 59 inches
My pickup is often a grocery getter for me and the horses. I'm short. If stuff slides to the front of the bed it's a pain to get out. This is not a real heavy duty net but it works terrific for me. I was satisfied with the value for price and it's made my life easier!
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Reviewed in the United States on December 18, 2025
T
Verified Purchase
ttlucier
Los Angeles, US
★★★★★ 3
Fine
Size: 59 inches
It will do for now. Just a net
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Reviewed in the United States on November 4, 2025
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Verified Purchase
DarkWing
New York, US
★★★★★ 5
Great for your truck when you need just a little extra place to haul groceries.
Size: 59 inches
When you run out of room in the back seat of the truck, this is a little way to add a little structure and keep it from rolling around on the trip home. These are great in that they have compartments, as well as provide a wall to keep things form slamming to the front when you hit the breaks.
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Reviewed in the United States on January 26, 2026

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