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Flowmaster

Flowmaster American Thunder Exhaust Systems for 1999-2002 SIERRA 2500, SILVERADO 2500 - 17325 System, Thunder, Cat-Back, Steel, Aluminized, Heat Shield, Tip, Chevy, GMC, Pickup 6.0L

SKU: FLO17325

Exhaust Systems
Flowmaster American Thunder Exhaust Systems for 1999-2002 SIERRA 2500, SILVERADO 2500 - 17325 System, Thunder, Cat-Back, Steel, Aluminized, Heat Shield, Tip, Chevy, GMC, Pickup 6.0L

Flowmaster

Flowmaster American Thunder Exhaust Systems for 1999-2002 SIERRA 2500, SILVERADO 2500 - 17325 System, Thunder, Cat-Back, Steel, Aluminized, Heat Shield, Tip, Chevy, GMC, Pickup 6.0L

SKU: FLO17325

Exhaust Systems
A$2,026.02
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's use of mandrel-bent tubing, which allows superior exhaust gas flow. The systems also feature mufflers (single or dual) that deliver plenty of the rich Flowmaster sound you expect. Components are built from stainless steel or aluminized steel; and some models include tips. American Thunder exhausts are available in more than a hundred configurations for fitment on specific truck and car applications.

Part Type

Exhaust Systems

Data: v4.2 - Upd: 2026-10-17 03:11:06

Specifications

Product Attributes - Brand
Flowmaster
Product Attributes - Manufacturer's Part Number
17325
Product Attributes - Part Type
Exhaust Systems
Product Attributes - Product Line
Flowmaster American Thunder Exhaust Systems
Product Attributes - UPC
700042017409
Product Attributes - System Material
Steel
Product Attributes - System Style
Cat-back
Product Attributes - Exhaust Type
Dual in/Single out
Product Attributes - Exit Location
Side
Product Attributes - System Finish
Aluminized
Product Attributes - Catalytic Converter(s) Included
No
Product Attributes - Intermediate Pipe Diameter (in.)
2.75 in.
Product Attributes - Muffler Included
Yes
Product Attributes - Muffler Quantity
One
Product Attributes - Muffler Configuration
Dual inlet/Single outlet
Product Attributes - Muffler Style
Chambered
Product Attributes - Muffler Material
Steel
Product Attributes - Muffler Finish
Black
Product Attributes - Hardware Included
Yes
Product Attributes - Tailpipe Diameter (in.)
3.00 in.
Product Attributes - Tip Included
Yes
Product Attributes - Tip Outlet Size (in.)
3.50
Product Attributes - Tip Quantity
1
Product Attributes - Tip Shape
Round
Product Attributes - Tip Cut
Slant
Product Attributes - Tip Edge Style
Rolled edge
Product Attributes - Tip Material
304 stainless steel
Product Attributes - Tip Color
Polished
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Kit includes heat shield.
Product Attributes - Special Attention
It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.

Reference Information

Brand Name/s Flowmaster
StreetFX SKU flo17325
SFX Item ID 4983699
Supplier Item Code 4983699
Manufacturer SKU 17325
Manufacturer UPC 700042017409
Alternative References FLM17325, 6.0L

Compatibility

Application Data
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; American Thunder Cat Back Exhaust System; Single; Single Side Exit; Incl. 3 in. Tailpipe; Heat Shield/50 Series(TM) Big Block Muffler; 3.5 in. Logo Embossed Stainless Tip;50 State Legal / California Emissions Compliant
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    Drivetrain4WD
    Application Notes78.0in, 198.1cm; Cab & Chassis; 4WD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    Drivetrain4WD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; RWD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; RWD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Cab & Chassis; RWD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes78.0in, 198.1cm; Cab & Chassis; 4WD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes78.0in, 198.1cm; Cab & Chassis; 4WD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionManual
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Cab & Chassis; RWD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionManual
    DrivetrainRWD
    Application Notes96.0in, 243.8cm; Extended Cab Pickup; 4WD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleStandard Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionManual
    Drivetrain4WD
    Application Notes96.0in, 243.8cm; Extended Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionManual
    Drivetrain4WD
    Application Notes96.0in, 243.8cm; Extended Cab Pickup; RWD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes96.0in, 243.8cm; Extended Cab Pickup; RWD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2000
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes96.0in, 243.8cm; Cab & Chassis; RWD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes96.0in, 243.8cm; Cab & Chassis; 4WD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleExtended Cab Pickup
    Truck Bed Length in. (AAIA)78.0in, 198.1cm
    TransmissionAutomatic
    Drivetrain4WD
    Application Notes96.0in, 243.8cm; Cab & Chassis; 4WD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    DrivetrainRWD
    Application Notes96.0in, 243.8cm; Cab & Chassis; RWD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    DrivetrainRWD
    Application Notes96.0in, 243.8cm; Cab & Chassis; RWD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2000
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; 4WD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2000
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    Drivetrain4WD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; 4WD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    Drivetrain4WD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; American Thunder Cat Back Exhaust System; Single; Single Side Exit; Incl. 3 in. Tailpipe; Heat Shield/50 Series(TM) Big Block Muffler; 3.5 in. Logo Embossed Stainless Tip;50 State Legal / California Emissions Compliant
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionManual
    Drivetrain4WD
    Application NotesN/R, N/R; Standard Cab Pickup; RWD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; RWD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; RWD; Flowmaster American Thunder Cat-back Exhaust System; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year1999
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Body StyleCab & Chassis
    Truck Bed Length in. (AAIA)96.0in, 243.8cm
    TransmissionAutomatic
    DrivetrainRWD
    Application Notes78.0in, 198.1cm; Extended Cab Pickup; 4WD; Fits Non HD, Extended cab/Short bed only.
    RegionUnited States (USA)
    Engine VIN CodeU

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