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Flowmaster Signature Series Exhaust System for Chevrolet and GMC

Part # 737894

  • • Brushed 304 stainless steel offers maximum corrosion resistance for a cleaner and more high-end appearance.
  • • TIG welding offers a more precise weld, better heat control and high-end appearance compared to MIG welding.
  • • Retains factory exhaust bezels for a cleaner apperance.
  • • Signature Series muffler offers an aggressive to moderate performance tone and increased performance over the stock system.
  • • Installer friendly design allows for an at home installation.
  • • Dyno proven performance gains you can feel.
  • • Increased power and torque over the stock exhaust system.
  • • Brushed appearance removes tooling marks for a cleaner overall look.

Description

Flowmaster's® Signature Series Cat-back exhaust system is designed for the 2019*-2026 GM Silverado/Sierra 1500 trucks (*new body style) with 5.3L engine and factory dual exhaust. This bolt-on system is manufactured using premium brushed 304 stainless steel throughout and features a 3.00-inch inlet pipe leading to a single inlet/dual outlet Signature Series straight-through muffler for a deep, moderately aggressive sound and maximum performance. This premium exhaust system is TIG welded for a stronger, more precise weld that looks as good as this system sounds. Maximum dyno gains of 21 hp and 26 lb.ft at the rear wheels. The dual 2.50-inch mandrel bent tailpipes are custom routed to clear the factory spare tire and tow hitch without any clearance issues and exit out through the factory exhaust bezels in the bumper, retaining the factory dual exhaust appearance. This system utilizes factory hanger locations, includes installation instructions, and all necessary hardware for an easy at home installation. Note: Fits 2WD and 4WD models.

Specifications

CARB (California) CompliantYes
Catalytic Converter IncludedNo
Catalytic Converter Quantity0
Clamping TypeFlat Band
Clamps IncludedYes
Exhaust SeriesSignature Series
Exhaust Tip Quantity0
Exhaust Tip ShapeRound
Exit StyleDual Out Rear
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Inlet TypeClamp-On
Main Piping Diameter2.50 in
Mounting Bracket IncludedYes
Muffler Body Height4.00 in
Muffler Body Length18.00 in
Muffler Body Material304 Stainless Steel
Muffler Body ShapeOval
Muffler Body Width9.00 in
Muffler FinishNatural
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler IncludedYes
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter3.00 in
UPC / GTIN00090127865149
WarrantyManufacturer's Limited Lifetime Warranty

Fits these vehicles

YearMakeModelSubmodelEngineNote
2019 - 2021ChevroletSilverado 1500Custom, Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST, SSV5.3L V8Fits crew and double cab models; Does not fit crew cab 2WD with 2 PC driveshaft
2022ChevroletSilverado 1500Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST5.3L V8Fits crew and double cab models; Does not fit crew cab 2WD with 2 PC driveshaft
2023 - 2026ChevroletSilverado 1500Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, PPV, RST5.3L V8Fits crew and double cab models; Does not fit crew cab 2WD with 2 PC driveshaft
2022ChevroletSilverado 1500 LTDHigh Country, LT, LT Trail Boss, LTZ, RST, SSV5.3L V8Fits crew and double cab models; Does not fit crew cab 2WD with 2 PC driveshaft
2019 - 2021GMCSierra 1500AT4, Base, Denali, Elevation, SLE, SLT5.3L V8Fits crew and double cab models; Does not fit crew cab 2WD with 2 PC driveshaft
2022 - 2026GMCSierra 1500Denali, Elevation, Pro, SLE, SLT5.3L V8Fits crew and double cab models; Does not fit crew cab 2WD with 2 PC driveshaft
2022GMCSierra 1500 LimitedDenali, Elevation, Pro, SLE, SLT5.3L V8Fits crew and double cab models; Does not fit crew cab 2WD with 2 PC driveshaft