SKU: 39714056121

Flowmaster 717873 FlowFX Cat-Back Exhaust System

Sale price$285.75 Regular price$317.50
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Flowmaster 717873 FlowFX Cat-Back Exhaust SystemThis Flowmaster FlowFX cat back exhaust system is designed for 1999 2007* (*Classic Body) GM Silverado Sierra 1500 trucks with 4. 3L, 4. 8L & 5. 3L engines and features 409 stainless steel construction for added durability and 16 gauge mandrel bent tubing for free unrestricted flow. The compact, oval "straight through" FlowFX performance muffler attaches behind the catalytic converter and delivers a moderate, deep and powerful sound with minimal

This Flowmaster FlowFX cat-back exhaust system is designed for 1999-2007* (*Classic Body) GM Silverado/Sierra 1500 trucks with 4.3L, 4.8L & 5.3L engines and features 409 stainless steel construction for added durability and 16-gauge mandrel-bent tubing for free unrestricted flow. The compact, oval "straight-through" FlowFX performance muffler attaches behind the catalytic converter and delivers a moderate, deep and powerful sound with minimal interior resonance. The mandrel-bent stainless tailpipe tucks up high in the undercarriage protecting it from being crushed when traversing rocky terrain. This system uses the factory hanger locations and is finished off with a 4.50-inch black ceramic-coated 304 stainless steel tip embossed with the Flowmaster name. The kit includes detailed instructions and all hardware necessary for a quick and easy installation you can do at home. Covered by our Lifetime Limited Warranty.

Features & Benefits

  • Increases Of 67 HP And 65 FT/LBS Over The Stock Exhaust
  • System Produces A Nice Rumble With Minimal Internal Resonance
  • Large 450-Inch Black Ceramic Coated Stainless Steel Tip Offers An Aggressive Look
  • FlowFX "Straight-Through" Performance Muffler Delivers A Deep Tone And Improved Exhaust Flow
  • Mandrel-Bent 16-Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow With Excellent Corrosion Resistance
  • Limited Lifetime Warranty

Attributes

  • Sound Level: Aggressive/ Moderate
  • Type: Cat-Back
  • Exhaust Type: Single
  • Outlet Type: Single
  • Exit Position: Rear Exit
  • Material: Stainless Steel
  • Diameter (IN): 3 Inch
  • Includes Muffler: Yes
  • Includes Exhaust Tip: Yes
  • Exhaust Tip Style: 4-1/2 Inch Round Angle-Cut
  • Exhaust Tip Material: Stainless Steel
  • Muffler Quantity: 1
  • Includes Exhaust Pipe Muffler Delete: No
  • Muffler Configuration: Single Inlet, Single Outlet
  • Includes Hardware: Yes
  • Required Welding: No
  • Estimated Install Time (Hours): 2
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39714056121

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Verified Purchase
GhostFace
Boise, US
★★★★★ 5
Secure Mount With Premium Feel
This phone mount feels incredibly sturdy once installed. No shaking or movement while driving, even on rough roads. The design looks clean and factory installed instead of bulky like a lot of other mounts. It holds the phone securely and keeps it easy to access for navigation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
L
Verified Purchase
L.A.
Cuba, US
★★★★★ 5
Good Solid Mount
Got for my 2019 TRD Off Road. Works great, solid mount. Phone easy in, easy out once you get used to it. Looks and feels well made.
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Reviewed in the United States on May 19, 2026
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
Solid Product
I was a bit skeptical based on the price ($85 total after taxes) but you can tell that for the price, this thing is sturdy and high quality. Holds solid onto the vent and keeps my iPhone in place. Easy to adjust and move to your liking, also easy to turn 90* and have your phone sideways. Only drawback is that is obstructs the view of the clock on my 4Runner and slightly obstructs my windshield, but I am sure I will get used to it.
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Reviewed in the United States on May 14, 2026
A
Verified Purchase
Annika Chestnut
Louisville, US
★★★★★ 5
Great phone holder
I use this phone mount in my Subaru Impreza, and it works perfectly with my vents. It holds my phone super securely—no wobbling or slipping—so it’s great for navigation or hands-free use. Really solid and reliable for the price.
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Reviewed in the United States on November 5, 2025
A
Verified Purchase
Amanda & Josh
San Leandro, US
★★★★★ 4
Excellent product.
First impression: excellent product. The only reason I deducted a star is because the price is obviously quite insane.
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Reviewed in the United States on February 26, 2026

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