ZZP 2.5 inch Stainless Cobalt/Ion Downpipe


150 reviews

This variant is currently out of stock

ZZP 2.5 inch Stainless Cobalt/Ion Downpipe
ZZP 2.5 inch Stainless Cobalt/Ion Downpipe

This fits on all Cobalt/Ion/G5/HHR/Pursuit models with the 2.0L supercharged, 2.2, & 2.4L naturally aspirated cars. Will not fit '08+ turbocharged models.


    • Stainless flex

    • Stainless flanges

    • Stainless Spun metal cat 

    • Stainless piping

Our downpipes are made from stainless steel. No worries about rusting or paint flaking off. It costs a little more but we feel it's worth it. All welding is done to the strictest of standards and bears a professional finish. Weld quality is higher than any other downpipe manufacture. We promise our welds to be 100% leak free. Even the flanges are stainless, which isn't something most companies can say. When shopping around, ask if the downpipe is 100% stainless, ask for a close up picture of their weld. You'll know right away, what true quality is and what it isn't.

The stock pipe narrows down to a 2" hole before flowing into the cat. This is very restrictive causing KR and a loss of HP. Our 2.5" stainless bolt in downpipe remove all of the stock downpipe restrictions. No more 2" inlet, no more O2 bung dimple. By doing so gains of over 15HP can be had along with a substantial drop in KR. Most users can drop a pulley size after adding our downpipe. Plus our 2.5" bolt in mates to the stock or 2.5" cat back exhaust system without any welding.
Transmission: This determines if you need a downpipe for an automatic or manual transmission.

We are currently offering $75 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 Henry@zzperformance.com. We will provide prepaid shipping labels for domestic (U.S.) shipments.

ZZP 2.5 inch Stainless Cobalt/Ion Downpipe
ZZP 2.5 inch Stainless Cobalt/Ion Downpipe
Customer Reviews
4.9 Based on 150 Reviews
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John T.
United States United States
2.5 down pipe

It feels more powerful

Blake F.
United States United States

Great car sounds alot better

Vaïk A.
Canada Canada
Its great

Only Thing is that my stock gasket between headers and downpipe is not fiting so well

Nicholas Z.
United States United States

Install went well, everything fit nicely. Quality is great and I couldn't be happier.

Miranda P.
Canada Canada
Cobalt Downpipe

Super fast shipping! Product is well made and easy to install! However was kind of disappointed by the sound.