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AWD/RWD LTG Downpipe

Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe

This is ZZP’s first exhaust part that we released for the Cadillac ATS and CTS 2.0 turbo.  This is the same part that is installed on Matt’s car which is the worlds fastest stock turbo ATS - we run what we sell. It is fully 304 stainless steel, so it will outlast the car and don’t forget the amazing TIG welding that ZZP is known for. Typical gains are from 10-20whp and quicker turbo spool. No tuning required, although it is recommended, and it bolts in place of the stock piece.  The stock downpipe is 13.5 lbs, while ZZP's catted pipe is 7.2 lbs.

We use a premium 400 cell cat which should not set off any check engine lights, however when changing any catalytic converter in new cars you run the risk of a P0420 code. 

We are currently offering $100 in store credit to purchase your stock catalytic converter back from you. If you're interested, take a photo of your stock downpipe and email it to We will provide prepaid shipping labels for domestic (U.S.) shipments. 

Revised 02/2020 with change of rear O2 placement to avoid any transmission line interference. Downpipe now includes 90* spacer for optimal sensor placement. 

Fits the following 2.0L LTG vehicles: AWD/RWD: ATS & CTS, & Camaro.
Does NOT fit Regal or Malibu, however we do offer the FWD version here: FWD LTG Downpipe/ O2 Housing

CLICK HERE for Digital Install Instructions


Our downpipes come with a high flow catalytic converter that is 48 state legal. Our catalytic converters will not pass California or New York state emissions. Please contact if you have any questions.

Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Exhaust - AWD/RWD LTG Downpipe
Customer Reviews
4.9 Based on 175 Reviews
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Filter Reviews:
Cédric N.
Belgium Belgium
400 cell cat

Perfect ! No engine light, perfect sound ! And you feel that it’s driving smoother .. perfect!

ZZPerformance AWD/RWD LTG Downpipe Review
Parrick C.
Canada Canada

Good value and makes the car sound so much better love it .

Romania Romania

Great quallity! Recommand

Quentin L.
United States United States
Great buy

Quick and easy installation

Michael W.
United States United States
Worth it

I was expecting the install to be a bit of a pain doing it on jack stands but it was pretty straight forward and simple. with this a intake and tune from ZZP my ATS performance was greatly improved.