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Flowmaster Force II Axle-back Exhaust System

1997-2004 Chevrolet Corvette with 5.7L engine. 2.5 inch Stainless Steel.

Part # 817517 Be the first to write a review
Estimated shipping date: 02/18/2022
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The Force II® system is designed to replace the original factory mufflers located behind the rear axle using factory style connections. With easy fit in mind, these stainless steel systems are mandrel-bent for maximum performance, feature specially-engineered 80 Series™ mufflers that have a deep moderate performance tone outside the car, with little to no interior resonance in the cab. The system uses the factory hangers and are finished off with quad 3.00-inch polished 304 stainless steel tips. Includes all necessary parts, hardware and instructions for a quick and easy installation. Force II systems are suited to customers looking for efficiency improvements without a lot of noise. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage.


  • Includes Hangers and Hardware for an Easy Installation
  • Specially Designed 80 Series Performance Mufflers
  • Mandrel-bent 16 Gauge Stainless Steel Tubing
  • Highly Polished Quad 304 Stainless Steel Tips
  • Deep Moderate Exterior Exhaust Tone
  • Lifetime Limited Warranty
  • Easy Installation

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 SeriesForce II
Exit PositionDual Out Rear
Heat ShieldNo
Inlet Diameter (in)2.5
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity2
Muffler Series80 Series Crossflow
Outlet Diameter (in)2
Product TypeExhaust System
Single DualDual
Sound LevelModerate/Mild
System TypeAxle-back
Tip Diameter (in)3
Tip Quantity4
Tube Diameter2.5 inch
Tubing Diameter (in)2.5
Type of ExhaustAxle Back
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817517

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 1997-2004 Chevrolet Corvette with 5.7L engine.

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