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Flowmaster American Thunder Crossmember-Back Exhaust System

1967-1968 Camaro and Firebird with V8 engine. 2.50 inch Aluminized Steel

Part # 17129 Be the first to write a review
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This American Thunder system is specially designed for 1967-1968 Camaro and Firebirds and is perfect for the person looking for a complete crossmember-back dual exhaust system. With an easy-fit in mind, this exhaust system is manufactured as a true dual exhaust using 2.50-inch aluminized steel tubing throughout, includes a built-in H-pipe design and delivers improved throttle response, power with a deep muscle car sound. The mandrel-bent tubing flows into a pair of Super 44 mufflers with 2.50-inch tailpipes exiting in the factory location behind the rear wheels pointing down just below the quarter panel. The system delivers a moderate to aggressive interior and exterior tone that's suited for the enthusiast who wants their performance to be heard. Designed for an easy fit, these systems include all necessary parts, hardware, and instructions. If you prefer Stainless steel construction, check out optional system# 817129. Notes: Fits convertibles by spacing down the factory convertible body brace by approximately .375-inch, or you can replace the factory body brace with a Hotchkis Performance body brace part #1404.


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16-gauge Aluminized Steel Tubing
  • Moderate to Aggressive Exterior Exhaust Tone
  • Complete Crossmember-Back Exhaust System
  • Super 44 Series Performance Mufflers
  • Tailpipes Exit in the Factory Location
  • Includes H-pipe Assembly
  • Flowmaster Quality

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Brand Flowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Side Exit
Heat ShieldNo
Inlet Diameter (in)2.5
MaterialAluminized Steel
Muffler Part Number942546
Muffler Quantity2
Muffler SeriesSuper 44 Series
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualDual
Sound LevelAggressive / Moderate
System TypeCrossmember-back
Tip QuantityNot Included
Tubing Diameter (in)2.5
California Proposition 65 RequiredNo
Part Number17129

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.

Fits 1967-1968 Chevrolet Camaro and Pontiac Firebird with V8 engine. Does not fit convertibles without modifications or replacement to the factory X-brace. See notes in description.

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    Some parts are not legal for use in California or other states with similar regulations.