For the person who is looking for a complete Headers-back dual exhaust system for your 1955-1957 Chevy coupes and sedans. This American Thunder® system is manufactured from 2.50-inch mandrel-bent stainless steel for maximum performance and longevity, and includes a built-in H-pipe for a mellow smooth tone eliminating back rap on deceleration. The system includes a pair of Super 40® Series performance mufflers for a deep exterior sound, with a moderate interior tone and dual tailpipes tucked up high for clearance and exit straight out the back under the rear bumper. 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. Covered by our Lifetime Limited Warranty. Notes: Does not fit wagons or convertibles.
Features:
H-pipe Crossover for Maximum Power and Deep Tone
Super 44 Series Mufflers for Deep Powerful Sound
Mandrel-bent 16-gauge Stainless Steel Tubing
Includes Hangers and Hardware for Installation
Moderate to Aggressive Exterior Exhaust Tone
Header-back True Dual Exhaust System
Does Not Include Header Reducers
Lifetime Limited Warranty
Specs
2WD/4WD
2WD
Brand
Flowmaster
California Proposition 65 Chemical Name
Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Required
Yes
Emission Code
5
Exhaust Series
American Thunder
Exit Position
Dual Out Rear
Heat Shield
No
Inlet Diameter (in)
2.5
Material
Stainless Steel
Muffler Part Number
Kit Only
Muffler Quantity
2
Muffler Series
Super 40 Series
Outlet Diameter (in)
2.5
Product Type
Exhaust System
Single Dual
Dual
Sound Level
Moderate/Aggressive Sound
System Type
Header-back
Tip Diameter (in)
3
Tip Quantity
2
Tubing Diameter (in)
2.5
Part Number
817174
Emissions
This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.