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Vehicle Info NeededDYNOMAXPART NUMBER: 289-39495
Cat-Back Exhaust System Ultra-Flo Stainless System
$43899
Ships on 09/30/2026
Lowest Price GuaranteeGM
- Cat-Back Exhaust System
- Ultra-Flo Stainless System
- 09-13 Silverado/Sierra 1500
- 4.8L/5.3L
- Crew Cab Short Bed
- Extended Cab Standard Bed
- 143.5" Wheelbase
Fits: Silverado/Sierra 1500 4.8L. 5.3L Engines - Crew Cab, Short Bed, Extended Cab, Standard Bed (143.5" W.B.) - 3" Mandrel bent stainless steel tubing
- Ultra Flo™ Muffler
- Stainless steel clamps
- Stainless steel 4" tip
- Limited Lifetime Warranty
- 90-Day Performance & Sound Guarantee
- +23 Horsepower & +30 LB-FT. Torque over stock
Part TypeExhaust System
BrandDYNOMAX
Package Height12.0
Package Width16.0
Package Length51.0
Weight44.0 PG
Part CategoryPerformance Parts
Hardware IncludedYes
Tailpipe Diameter (In.)3
Tip CutSlant
Muffler FinishNatural
Exit LocationPassenger side
Muffler StylePerforated tube
Inlet QuantityOne
Tip Outlet Size4 in (101.6 mm)
Muffler MaterialStainless steel
Tip IncludedYes
QuantitySold as a kit
System FinishNatural
Muffler IncludedYes
Muffler QuantityOne
System StyleCat Back
Muffler ConfigurationSingle inlet/Single outlet
System MaterialStainless steel
Exit QuantityOne
Tip MaterialStainless steel
Tip Edge StyleRolled edge
Tip QuantitySingle
Tip ShapeRound
Intermediate Pipe Diameter3 in (76.2 mm)
Exhaust TypeSingle
Vendor Part Number39495
Package Qty1
Package TypeEA
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