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

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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

Meredith Jones

49

Meredith Jones
2008 Volvo C30
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Was it easy to install? Any installation tips that will help others?
Purchased car with exhaust present.
Any additional comments?
Even though I didn’t choose this exhaust, I absolutely love it and would have bought it for my first (stock) 09 r-design. The sound is louder and deeper than stock exhaust sound but not too loud and not obnoxious, great mixture of enhancement without attracting too much attention.
View on Meredith's build
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What made you choose this particular product?
This was a sponsored product
Was it easy to install? Any installation tips that will help others?
Install wasn't too bad. We did it on the ground with floor jacks. It helped the car was still pretty new.
Once you've had a chance to use the product, did it meet your expectations?
It's not as loud as other exhaust, but sounds fantastic at WOT. If you've got to haul around non-car people, I highly recommend MagnaFlow for the 2011-14 R/T.
View on Bud's build
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What made you choose this particular product?
Was looking for an affordable muffler to pair to my resonator and secondary cat delete
Is this your first time buying from this brand? Did you consider other brands?
Yes never had another muffler
Was it easy to install? Any installation tips that will help others?
Yes and make sure the hanger is welded before starting
View on Jake's build
Ryan Anderson

271

Ryan Anderson
2007 Ford Focus
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What made you choose this particular product?
Nice quality and sounds on a budget and it was available in 2.5"
Any additional comments?
2.5" from flex back with gutted rear cat into muffler with no resonator
View on Ryan's build
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What made you choose this particular product?
The look of a dual exhaust system and my Flowmaster system was a little much at times.
Is this your first time buying from this brand? Did you consider other brands?
Yes, this is my first Magnaflow product.
Once you've had a chance to use the product, did it meet your expectations?
I love the look and the sound of this system.
View on Joel'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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