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MagnaFlow Exhaust Products - Competition Series Cat-Back Performance Exhaust System (16857)

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This part fits

  1. 2009 Pontiac G8 GT 6.0L V8 cid:364 cc:5967
  2. 2009 Pontiac G8 GXP 6.2L V8 cid:376 cc:6162
  3. 2008 Pontiac G8 GT 6.0L V8 cid:364 cc:5967
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About this product

Part #: 16857

The MagnaFlow Competition Series Exhaust Systems are designed for those seeking maximum performance, reduced mass and an aggressive exhaust note that demands attention. A High Temp Satin Black Coating provides an aggressive unique style and added protection. These systems may not comply with all local or federal noise requirements.

More Details

Attachment TypeBolt-On
Exhaust Pipe MaterialStainless
Exhaust TypeDual
Exit PositionDual Split Rear
Exit QuantityDual
Exit StyleDual Split Rear
FinishStainless
Inlet Connection TypeBolt-On
Inlet Inside Diameter3.000 in.
Main Piping Diameter3.000 in.
MaterialStainless
Muffler Body Diameter5.000 in. x 8.000 in.
Muffler Body FinishPolished
Muffler Body Height5.000 in.
Muffler Body Length14.000 in.
Muffler Body MaterialStainless Steel
Muffler Body ShapeOval
Muffler Body Width8.000 in.
Muffler Count2
Muffler FinishPolished
Muffler TypeStraight-Through
Outlet Outside Diameter3.500 in.
Pipe MaterialStainless Steel
SeriesCompetition
System TypeCat Back
Tip Length8.250 in.
Tip MaterialStainless Steel
Tip ShapeOval
Tip TypeWelded;Double Wall;Straight Cut;Rolled Edge
Tubing Diameter3.000 in.
Additional Documents
  1. Installation Instructionspdf

See what our community says about magnaflow-exhaust-products products

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Once you've had a chance to use the product, did it meet your expectations?
These pipes look amazing and sound even better!
View on Michael's build
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What made you choose this particular product?
Great price from amazon and ships in 2 days if you have prime. Adds great sound in the higher RPMs around 4000+
Is this your first time buying from this brand? Did you consider other brands?
Why would I buy somewhere else. They are the best.
Was it easy to install? Any installation tips that will help others?
Had it professionally installed. Had mufflers deleted too. Loud.
Once you've had a chance to use the product, did it meet your expectations?
Must buy
View on Daniel's build
Everyday Car Guys

941

Everyday Car Guys
1986 BMW 325
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What made you choose this particular product?
Had to stay CARB legal and wanted smaller units for more ground clearance so there was no other option.
Is this your first time buying from this brand? Did you consider other brands?
Nope. Would do it again.
View on Everyday's build
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What made you choose this particular product?
Loud, tucked away underneath increase clearance
Is this your first time buying from this brand? Did you consider other brands?
First time buying Magnaflow.
Was it easy to install? Any installation tips that will help others?
Installed myself. Tough to get the rubber hangers off. Some WD40, some busted knuckles and a lot of cursing later she was installed.
Once you've had a chance to use the product, did it meet your expectations?
Sounds great. Only downside, Jeep insulation sucks, so although it sounds awesome, long commutes can get annoying.
View on Steve's build
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Is this your first time buying from this brand? Did you consider other brands?
Yes
View on Jeff's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About MagnaFlow Exhaust Products

MagnaFlow is a performance exhaust business through and through, yet they've embraced the importance of the technological developments over the past 30 and spent those years evolving the CarSound Catalytic Converter business into what it is today. Today that technology is applied to all of their high performance exhaust products, from cat-back systems and universal mufflers to catalytic converters. MagnaFlow stakes their 30 year reputation for excellence on every product they sell - a claim made possible only through extensive testing and stringent quality assurance methods. But you've come to expect nothing less from them and they’re proud to deliver.

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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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Wheelwell helps you organize all your stuff for your car, I’ve loaded all my cars on Wheelwell and you can see all the parts I’ve put in them and that may help you make a decision with your own build.

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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.

James M.

Ford Focus ST

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

Wallace R

Chevrolet Silverado 1500