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Flowmaster American Thunder Crossmember-Back Exhaust System

Fits 1968-1972 GM A-Body, 3.00 inch Aluminized Steel

Part # 17200 Be the first to write a review
Estimated shipping date: 03/17/2022
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Delta Flow
This crossmember-back American Thunder system is custom designed for high horsepower and large cubic inch engines in 1968-1972 GM A-Bodies with a V8 engine. It's a true-dual exhaust system featuring all mandrel-bent 3.00-inch aluminized steel tubing with a built-in H-pipe crossover assembly flowing into a pair of large cased Super 40 Series performance mufflers for maximum power and a deep powerful aggressive exhaust note. The large 3.00-inch mandrel-bent tailpipes are custom bent to tuck up high above the rear end and exit with a slight turn down under the rear bumper. The system is constructed from aluminized steel and includes all necessary hardware and hangers for installation and is covered by our 3-year Limited Warranty. This system is also available in Stainless steel and comes with a Lifetime Limited Warranty, check out part# 817200.


  • Super 40 Series Performance Mufflers for Deep Powerful Sound
  • H-pipe Crossover for Maximum Power and Deep Tone
  • Mandrel-bent 16-gauge Aluminized Steel Tubing
  • Includes Hangers and Hardware for Installation
  • Crossmember-back True Dual Exhaust System
  • Does Not Include Header Reducers or Factory Manifold Downpipes
  • Aggressive Exterior Exhaust Tone
  • Large Dual 3.00-inch Tubing
  • 3-year Limited Warranty

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 Out Rear
Heat ShieldNo
Inlet Diameter (in)3
MaterialAluminized Steel
Muffler Part Number953048
Muffler Quantity2
Muffler SeriesSuper 40 Series
Outlet Diameter (in)3
Product TypeExhaust System
Single DualDual
Sound LevelAggressive
System TypeCrossmember-back
Tip QuantityNot Included
Tube Diameter3 inch
Tubing Diameter (in)3
Type of ExhaustCrossmember-back
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number17200

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.

Systems do not include header reducer cones or downpipes to connect to factory manifolds.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

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