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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-17125
Force II Cat-Back Exhaust System 1988-1992 GM Silverado/Sierra 1500/2500 5.7L (Standard Cab/Short Bed)
$64995
Ships on 09/17/2026
Lowest Price GuaranteeGM
Force II Cat-Back Exhaust System1988-1992 GM Silverado/Sierra 1500/2500 5.7L (Standard Cab/Short Bed) 3" Tubing, No Tips Single Side Exit 70 Series Big Block Muffler Aluminized Steel
FLOWMASTER MUFFLERS 17125 Features:
For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Cat-back exhaust system provides. S.O.S. (Single out side) systems are the perfect choice. Our Force II® systems delivers a moderate exterior tone and mild to moderate interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. This system is constructed from large 3.00-inch mandrel-bent aluminized steel tubing flowing into a 70 Series™ Big Block II™ muffler for a deep mellow tone. The 3.00-inch tailpipe uses the factory hangers for a quick and easy installation and is finished off with a turn down style tip cut into the tubing. This exit location is especially recommended for towing applications since it will not be blowing exhaust on your boat or trailer. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Note: Fits 2/4 wheel drive Standard Cab/Short bed configuration with 117-inch wheelbase.- Includes Hangers and Hardware for an Easy Installation
- Dyno Tuned for Maximum Performance
- Uses the Factory Hanger Locations
- Moderate Exterior Exhaust Tone
- Mandrel-bent 16 Gauge Tubing
- Aluminized Steel Construction
- 3-year Limited Warranty
Part TypeExhaust System
BrandFLOWMASTER
Package Height11.5
Package Width16.0
Package Length58.0
Weight49.1 PG
Tailpipe Diameter (In.)3
Muffler Inlet Inside Diameter3 in.
Hangers IncludedYes
Main Piping Diameter3 in.
Tail Pipe QuantitySingle
Inlet TypeClamp-On
Catalytic Converter Quantity0
Exit LocationPassenger side
Inlet QuantityOne
Muffler Body Length22 in.
Sound LevelMild
Muffler Body MaterialAluminized Steel
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorSilver
System FinishAluminized
Muffler Quantity1
Muffler Inlet Outside Diameter3.13 in.
Exit QuantityOne
Muffler Flanged OutletNo
Tip QuantityNone
Exhaust TypeSingle
Catalytic Converter IncludedNo
Heat Shield IncludedNo
Part CategoryPerformance Parts
Hardware IncludedYes
Exhaust Tip Quantity0
Valve IncludedNo
Muffler TypeChambered
Pipe MaterialAluminized Steel
Muffler Body Width10 in.
Tail Pipe Tapered OutletNo
Muffler Body ShapeOval
Mounting Bracket IncludedYes
Muffler Outlet Quantity1
Muffler FinishBlack High-Temperature Paint Finish
Inlet Diameter3 in.
Clamps IncludedYes
Muffler StyleChambered
FinishAluminized
Exit StyleSingle Out Side
Muffler Body Height5 in.
Tip IncludedNo
Clamping TypeU-Bolt
Muffler Flanged InletNo
Spring Bolt Kit IncludedNo
Muffler Series70 Series Big Block
QuantitySold as a kit
Muffler IncludedYes
Exhaust Tip ConnectionClamp-On
System StyleCat Back
Tail Pipe Outlet Outside Diameter3 in.
Muffler ConfigurationSingle inlet/Single outlet
System MaterialSteel
Valve TypeNot Applicable
Intermediate Pipe Diameter3 in (76.2 mm)
Part FitmentDirect Fit
Vendor Part Number17125
Package Qty1
Package TypeEA
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