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Flowmaster FlowFX Cat-Back Exhaust System 717990

Flowmaster FlowFX Cat-Back Exhaust System 717990
Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990Flowmaster FlowFX Cat-Back Exhaust System 717990
$1,023.99 ea
NEWARRIVING SOONEstimated Ship Date 09/09/2026 (If Ordered Today)20 Available from HOLLEY PERFORMANCE PRODUCTS as of 08/24/2026
Model: 4952722
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
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[More Info]
This Flowmaster® FlowFX® cat-back exhaust system for the 1999-2006 GM 1500 trucks (2007 1500 Classic) with the 4.3, 4.8, or 5.3-liter engine (Crew Cab 5.5' bed, Extra Cab 6.5' bed only) is manufactured using durable 409 stainless steel throughout and features 3.00 to dual 2.50-inch mandrel bent pipes for better exhaust gas flow. A FlowFX "straight-through" muffler is used for a moderate to mild sound level and maximum performance. Maximum increases on the dyno revealed +14 hp and +13 lb-ft at the rear wheels. This system exits out the same side, in front of the rear wheel on the passenger with dual 4.00-inch black ceramic tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.
Features:
  • Max increases of up to 14 hp and 13 lb-ft over the stock exhaust at the rear wheels
  • 3.00 to dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • Dual 4.00-inch black ceramic coated tips add a custom look to the truck
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • FlowFX “straight through” performance muffler delivers a deep, moderate performance tone and improves exhaust flow
Fits 1999-2006 GM 1500 (2007 1500 Classic) trucks with 4.3, 4.8, 5.3-Liter engines. Fits Crew Cab 5.5' bed, Extra Cab 6.5' bed only. 2 and 4 wheel drive
Installation Notes:
Fits 1999-2006 GM 1500 (2007 1500 Classic) trucks with 4.3, 4.8, 5.3-Liter engines. Fits Crew Cab 5.5' bed, Extra Cab 6.5' bed only. 2 and 4 wheel drive
About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance 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. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
fm_warranty_general.pdf88.58KB
717990_instructions.pdf1.85MB

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Chevrolet Silverado 1500 Classic Hybrid 2007 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Classic LS 2007 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Classic LT 2007 4.8L / 294 / V8
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Classic WT 2007 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 1999 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 2000 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 2001 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 2002 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 2003 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 2004 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 2005 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Base 2006 4.3L / 262 / V6 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Custom 2002 4.3L / 262 / V6 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Hybrid 2004 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Hybrid 2005 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 Hybrid 2006 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 1999 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 2000 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 2001 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 2002 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 2003 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 2004 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 2005 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LS 2006 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 1999 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 2000 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 2001 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 2002 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 2003 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 2004 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 2005 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 LT 2006 5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 WT 2002 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 WT 2003 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 WT 2004 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 WT 2005 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
Chevrolet Silverado 1500 WT 2006 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Classic Hybrid 2007 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Classic SLE 2007 4.8L / 294 / V8
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Classic SLT 2007 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Classic SL 2007 4.3L / 262 / V6
5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Classic WT 2007 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Base 2002 4.3L / 262 / V6
4.8L / 294 / V8
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Base 2003 4.3L / 262 / V6
4.8L / 294 / V8
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Base 2004 4.3L / 262 / V6
4.8L / 294 / V8
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Base 2005 4.3L / 262 / V6
4.8L / 294 / V8
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 HT 2002 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Hybrid 2005 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 Hybrid 2006 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 1999 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 2000 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 2001 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 2002 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 2003 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 2004 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 2005 5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLE 2006 5.3L / 325 / V8
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 1999 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 2000 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 2001 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 2002 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 2003 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 2004 4.8L / 294 / V8
4.3L / 262 / V6
5.3L / 325 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 2005 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SLT 2006 5.3L / 325 / V8 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SL 1999 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SL 2000 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SL 2001 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SL 2002 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SL 2003 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 SL 2006 5.3L / 325 / V8
4.8L / 294 / V8
4.3L / 262 / V6		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 WT 2002 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 WT 2003 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 WT 2004 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 WT 2005 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only
GMC Sierra 1500 WT 2006 5.3L / 325 / V8
4.3L / 262 / V6
4.8L / 294 / V8		 Fits Crew Cab 5.5' Bed, Extra Cab 6.5' Bed Only

Specifications:

California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series FlowFX
Exit Position DOSS
Material 409 Stainless Steel
Mount Type Uses Factory Hangers
Muffler Body Length (in) 14
Muffler Color Natural
Muffler Finish Brushed
Muffler Inlet Diameter 3.00
Muffler Inlet Location Centered
Muffler Material 409S Stainless Steel
Muffler Outlet Diameter 2.50
Muffler Outlet Diameter (in) 2.50
Muffler Outlet Location Dual Outlet
Muffler Overall Length (in) 20
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series FlowFX
Muffler Shape Oval
Muffler Type Absorption
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Single Dual Dual
Sound Level Aggressive / Moderate
System Type Cat-back
Tip Cut Angle
Tip Diameter 4.00
Tip Edge Style Cut
Tip Finish Black Ceramic
Tip Length 5.25
Tip Logo Laser
Tip Material 304 Stainless
Tip Quantity 2.00
Tip Shape Round
Tip Style Double Wall
Tubing Diameter (in) 3.00/2.50
Tubing Material 409S Stainless Steel

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