Flowmaster's American Thunder cat-back exhaust system for the 2014-2017 GM 1500 trucks is perfect for the person looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (Dual Out Rear/ Dual Out Side) emissions-legal system, for the Crew Cab and Double Cab models with 4.3L V6 or 5.3L V8 engine, features a stainless steel Super 40 Series muffler and dual 2.50” stainless steel mandrel bent tailpipes. The system finishes off with polished 3.50” stainless steel tips. The exhaust system is manufactured in the USA and is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.
  • Stainless Steel Construction
  • Great Performance Tone
  • Patented Delta Flow Technology
  • Lifetime Limited Warranty

Application Summary:

Fits 2014-2017 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 4.3L V6 or 5.3L V8 gas engine. Does Not Fit Crew Cab 2WD with 2 Pc Driveshaft.
Bullet Point #1 Stainless Steel Construction
Bullet Point #2 Great Performance Tone
Bullet Point #3 Patented Delta Flow Technology
Bullet Point #4 Lifetime Limited Warranty
Country of Origin (Primary) US
Emission Code Legal US
Exhaust Series American Thunder
Exhaust Type Dual
Exit Position Dual Side Rear
Exit Style Straight
Harmonized Tariff Code (Schedule B) 8708925000
Hazardous Material Code N
Heat Shield No
Inlet Diameter (in) 3
Inlet Size (in.) 3
Life Cycle Status Code 2
Life Cycle Status Description Available To Order
Material 409 Stainless Steel
MSDS Required Flag N
MSDS Sheet Number N
Muffler Count 1
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Super 40 Series
NAFTA Preference Criterion Code B
Outlet Diameter (in) 2.5
Outlet Size (in.) 2.5
Single Dual Dual
Sound Level Moderate/Aggressive Sound
System Type Cat Back
Tip Diameter (in) 3.5
Tip Diameter (in.) 3.5
Tip Length (in) 13
Tip Quantity 2
Tip Size 3.5 in.
Tubing Diameter (in) 2.5
Warranty Time 12

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Flowmaster 817669 Cat-back System 409S - Dual Rear/Side Exit - American Thunder - Aggressive Sound

  • $825.25