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08-14 Challenger V8 SRT8 Cat Back System SMC21

Price INCLUDES Mufflers!
Add a pair of mufflers to the right.

Part Numbers
SMC21R - System with Race Pro Mufflers
SMC21S - System with Street Pro Mufflers
SMC21V - System with Violator Mufflers
Pricing: $0.00
5 5 2

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How It Sounds

Violator Mufflers

Street Pro

Race Pro



SRT8 cars only!

Includes all stainless siamese design X pipe, 1 piece slip fit tailpipes, Pypes mufflers, stainless band clamps, hangers, and polished stainless classic double box tips. No cutting or welding required! Increases horsepower by 10-18.

***This kit is 3"

California Residents: Prop 65 WARNING


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Shipping Information

  • Item Requires Shipping
  • 70.0 lbs.
  • W60.0000” x H14.0000” x L14.0000”

Customer Reviews

Comment Total Reviews (2)

SMC21V system on 09 Challenger 5.7 Hemi
  • Currently 4/5 Stars

Reviewed by:

Product ownership: Less than 1 week

Purchased from: Pypes Performance Exhaust

I have to say I'm impressed with the entire system . When I changed my R/T over to SRT 6.1 manifolds and full exhaust I loved the improvement and sound . Once I installed this system I fell back in love with the Car! Install was 1.5hrs start to finish due to some issues with the band clamps. I'd have given it 5 stars had the clamps not fought me on install. The locking lug on the stud keep spinning off a quick trip to the vise fixed that issue.

The quality and fit of the pipes was perfect. Every piece went in without a hitch. When I installed the split tips it was drama free they lined up with the rear fascia and the gaps where perfect with like adjustment needed. I installed a $1300.00 Borla and spent 1hr bending hangers and tweaking things to keep the tips from melting the rear plastic fascia. Not with Pypes ! Went together like factory parts.

Now the most important part !!! The sound of this car is amazing ! Video clips don't capture the low rumble it has , snap the gas and it roars like a Hemi should now. Under way it has no cab noise or droan. It has a tuff sounding idle and just sounds badass if your in a car behind it (which I was after install)

All and all I can't find any reason not to recommend this system to potential buyers .
The price point when purchased at "show price" is insane . I got mine at the Pypes Open House and I'm now sporting Perma Grin every time I fire it up.

Very Satisfied
  • Currently 5/5 Stars

Reviewed by:

Product ownership: Less than 1 year

Not purchased from: Pypes Performance Exhaust

My experience with the
Pypes Violators were amazing. Love the sound, and love the performance.
I have recently ran into some complications though only after 3 month on
having it on my challenger. For one issue, the driver side hangers are
not aligned correctly. There for i only have the furthest hanger and the
closest hangar to the violator muffler. The mid hangar is currently not
on due to rubbing the bottom of the spare tire bucket. 2nd there is some
rattleing coming from the driver side muffler as well. I went ahead and
disassembled the exhaust and without banging, shaking, hammering,
prying, or doing anything physical to it, i simply turned the outlet
side down and some burnt shards came out of it. Assuming the problem was
fixed i put it back on my Challenger and still head a rattling sound
coming from the muffler. (Very noticeable) i am thinking the gates that
are in the muffler are loose causing it to rattle. I dont know what else
to do and i just want it back to normal from when i first put it on. Its
a great exhaust no complaints, and i always recommend it to any of our
club members that are looking for exhaust here in san antonio TX. I
thank you very much and i hope to hear back from you.

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