Flowmaster American Thunder Exhaust Chev/GMC C10/15/20/25 #17742

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Part #



Header-back - American Thunder® Kit - DOR/S - Mod/Agg Sound

Application Summary

1973 to 1987 Chevrolet and GMC C10 (1/2 ton) and C20 (3/4 ton) Pickup Trucks, 2 Wheel Drive Only. Not emissions compliant on vehicles originally equipped with a catalyst system.

Note 1: Not Legal For Use On Vehicles Originally Equipped With Catalytic Converter


Flowmaster's American Thunder® Crossmember-back exhaust system for the 73-87 GM C10/C20, ½ and 3/4 ton, 2WD pickup truck is perfect for the person looking for moderate to aggressive sound levels with all of the performance benefits that you would expect from Flowmaster. This Crossmember-back DOR/DOS (Dual Out Rear, Dual Out Side) system features dual Super 44 Series mufflers, 2.50" mandrel bent aluminized tubing and accommodates both dual and single exhaust crossmembers. This system is routed in a fashion that accommodates both long and short wheelbases with automatic or manual transmissions, and provides adequate clearance for substantially lowered vehicles. The exhaust system is manufactured in the USA and is covered by Flowmaster's 3 Year Limited Warranty. This system is not emissions compliant on vehicles that were originally equipped with catalytic converters. Note: This system is not designed as a direct bolt-on and will require the user to fabricate pipes to connect to manifolds or headers.

Famous Flowmaster® Sound

Multiple Exit Options

Patented Delta Flow Technology

Made in the USA

More Information
Part Type Exhaust System Kits
Product Line Exhaust
Brand Flowmaster
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