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Flowmaster

Flowmaster American Thunder Crossmember-Back Exhaust System

1967-1974 Chevrolet Camaro, Pontiac Firebird and 1968-1974 Chevrolet Nova with V8 engine, 2.5" pipes

Part # 17104 Be the first to write a review
Estimated shipping date: 03/30/2022
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$634.95
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Flowmaster is proud to introduce our American Thunder dual exhaust system for 1967-1974 Camaro and Firebird, and 1968-1974 Nova. The system features our exclusive 80 Series Crossflow performance muffler that tucks up high behind the rear differential. Other features include all mandrel-bent dual 2.50-inch head pipes with a built-in H-pipe crossover and dual 2.50-inch tailpipes for a deep rich sound and optimum performance. This crossmember-back aluminized steel exhaust system gives these classic muscle cars a moderate tone inside and out. The system includes all parts, hardware and illustrated instructions and is covered by our 3-year Limited Warranty. If you prefer Stainless steel construction, check out optional system# 817104 which comes with a Lifetime Limited Warranty. Notes: Does not include manifold downpipes or header reducer cones. Convertible models will require adding 3/8-inch of shims to the stock factory X-brace for clearance or purchasing Hotchkis Performance Convertible brace Part# 1404.

Features:

  • H-pipe Crossover for Maximum Power and Deep Tone
  • Includes Hangers and Hardware for Easy Installation
  • Mandrel-bent 16-gauge Aluminized Steel Tubing
  • Does Not Include Manifold Downpipes or Header Reducers
  • Moderate Exterior Exhaust Tone
  • Maximum Ground Clearance
  • Crossmember-back System

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.

2WD/4WD2WD
Brand Flowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Rear
Heat ShieldNo
Inlet Diameter (in)2.5
MaterialAluminized Steel
Muffler Part Number42585
Muffler Quantity1
Muffler Series80 Series Crossflow
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualDual
Sound LevelModerate
System TypeCrossmember-back
Tip QuantityNot Included
Tube Diameter2.5 inch
Tubing Diameter (in)2.5
Type of ExhaustCrossmember-back
UPC700042013302
California Proposition 65 RequiredNo
Part Number17104
5

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.

Works with Factory manifolds or headers. Connector pipes not included. Fits 1967-1974 Chevrolet Camaro, Pontiac Firebird and 1968-1974 Chevrolet Nova with V8 engines. Convertible models will require adding 3/8-inch of shims to the stock factory X-brace for clearance or purchasing a Hotchkis Performance Convertible brace Part# 1404.
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