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Flowmaster - Force II Cat Back System (817694)

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$801.48

$1,047.68

You save: $246.20 (23%) off MSRP

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This part fits

  1. 1985 Chevrolet Corvette
  2. 1984 Chevrolet Corvette
Authorized Dealer

About this product

Part #: 817694

Flowmaster's Force II Cat-back system for the 1984-1985 Chevrolet Corvette is perfect for the person looking for a moderate exterior and mild interior exhaust tone, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR (Dual Out the Rear) emissions-legal system for the 5.7L V8 features stainless steel 60 Series Delta Flow mufflers and 2.50 409S stainless steel tailpipes. Like all Flowmaster systems, the pipes are all mandrel bent to reduce any restrictions and maximize performance. The system finishes with 3.00 polished 304S stainless steel tips. The exhaust system is manufactured in the USA and is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

More Details

2WD/4WDRWD
Bullet Point #1Stainless Steel Construction
Bullet Point #2Dyno Tuned For Maximum Performance
Bullet Point #3Patented Delta Flow Technology
Bullet Point #4Lifetime Limited Warranty
Catalytic Converter IncludedNo
Exit PositionDual Rear Exit
Heat ShieldNo
Heat Shield AttachedNo
Inlet Diameter (in)2.25
Inlet Inside Diameter (in.)2.5
MaterialStainless Steel
Mount TypeFlanged
Muffler Count2
Muffler Quantity2
Muffler Series60 Series Delta Flow
Muffler TypeWelded Baffle
Outlet Diameter (in)2.5
Outlet Outside Diameter (in.)3.5
ShapeOval
Single DualDual
Sound LevelMild/Moderate Sound
System TypeCat-back System
Tip CutAngle
Tip Diameter (in)2.25
Tip Edge StyleRolled
Tip FinishPolished
Tip Quantity4
Tip ShapeRound
Tip TypeSingle Wall
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

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What made you choose this particular product?
This product gives you that fantastic and aggressive sound you expect out of a muscle car. Highly recommend for anyone who wants to add a bit of growl to their ride!
Is this your first time buying from this brand? Did you consider other brands?
This is my first time buying from Flowmaster and I considered corsa as an alternative before settling on the Flowmasters.
Was it easy to install? Any installation tips that will help others?
I had them professionally installed.
Once you've had a chance to use the product, did it meet your expectations?
They sounded exactly how I wanted them to sound. I was overjoyed!
Any additional comments?
They do drone a bit during MDS activation and in the 2.2k rpm range. I would recommend 12inch cherry bomb glasspack mufflers to use in place of the resonators to tone down the drone while maintaining the impressive sound. Your mileage and preferences may vary.
View on Charles's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Sound, makes the car super loud and I love it
Is this your first time buying from this brand? Did you consider other brands?
Yes
Was it easy to install? Any installation tips that will help others?
Yes I'm a mechanic by trade so I just did it myself
Once you've had a chance to use the product, did it meet your expectations?
Yes good price for what your getting
View on Nick's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Other exhaust clips with this muffler on the 2.4L engine. I preffered a custom dual exhaust with two of these over pre made catbacks.
Is this your first time buying from this brand? Did you consider other brands?
First!!!
View on Paul's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Had a friend at a automotive shop that took it off a customers car and was going to throw it away, so I was offered it for $100.
Is this your first time buying from this brand? Did you consider other brands?
Yes. I was actually looking at Gibson exhaust but I couldn't pass up the deal.
Was it easy to install? Any installation tips that will help others?
Easy install. Cutting is required on the factory exhaust and it's a little awkward to remove the stock exhaust by yourself.
Once you've had a chance to use the product, did it meet your expectations?
It's loud and drones some but with a manual you can keep the rpm in the right range to avoid this. Sounds great, almost like a VQ from a 350Z/370Z but a little raspier.
View on Jake's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
Any additional comments?
Stock exhaust, cut a 12in section off after the cats which are gutted. Love the sound, love the look of the exhaust tips so 90% of the exhaust is still intact.
View on Skylar's build

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  • California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

    *Some manufacturer restrictions apply.

    About Flowmaster

    Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.

    Benefits of adding this mod

    An upgraded exhaust system is one of the easiest modifications that offers an immediate, noticeable performance improvement. Whether you’re cruising an M3 or modding a diesel truck, an upgraded exhaust will open up the restrictive factory system, allowing your engine to breathe better and deliver peak power! From lighter weight exhaust headers to improved cat-back systems, to better sounding mufflers, modifying your exhaust setup is a great place to express the character of your ride in a unique and cost effective way. Whatever you’re looking for in a modified exhaust system, we can provide the absolute best systems to make your vision a reality.

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    we ship worldwide!

    Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.

    + FREE GROUND SHIPPING ON U.S. ORDERS OVER $99
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    Have a question? Ask an Expert!

    Finding the best parts can be tricky

    - but not to worry! Our team of experienced American Muscle, JDM, Euro, and off-road tuners are ready to answer your questions (as long as we’re not in the garage wrenching on our own builds).

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    Matt Farah

    Smoking Tire / The Drive

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    Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

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    Your customer service is wonderful. Thank you for taking care of this. My review will express all. Thank you!

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    Chevrolet Silverado 1500