ZZP 2.5 inch Stainless Cobalt/Ion Downpipe

Exhaust - ZZP 2.5 Inch Stainless Cobalt/Ion Downpipe
Exhaust - ZZP 2.5 Inch Stainless Cobalt/Ion Downpipe

ZZP 2.5 inch Stainless Cobalt/Ion Downpipe

195 reviews
Transmission
Regular price $244.99
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  • In stock, ready to ship
  • Inventory on the way

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.

Featuring:

  • Stainless Flex
  • Stainless Flanges
  • Stainless spun metal cat
  • Stainless piping
  • O2 bung and bung plug for wideband O2 sensor

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.

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 customerservice@zzperformance.com if you have any questions.

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 Henry@zzperformance.com. We will provide prepaid shipping labels for domestic (U.S.) shipments.

Customer Reviews
4.9 Based on 195 Reviews
5 ★
91% 
177
4 ★
7% 
14
3 ★
2% 
4
2 ★
0% 
0
1 ★
0% 
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LB
05/05/2022
Lynelle B.
United States

Downpipe 2.5

Direct fit! Great product

MD
05/05/2022
Michel D.
Canada Canada

Ses pas compliquer ses de toute beauter toute est bien fait super de bon produit de qualiter good job guys

ZZPerformance ZZP 2.5 inch Stainless Cobalt/Ion Downpipe Review
J
04/24/2022
Jeff
United States United States

Cobalt 2.2 LTZ Sedan

Glad I installed downpipe made a noticeable difference in acceleration and sounds good not too loud. Also got rid of rough idle issue I was having after installing CAI. Removing stock exhaust bolts was a challenge almost gave up. Ended up using 1/4" impact with adaptor for 1/2" socket and PB Blaster. Impact won't break nuts loose or snap them off but vibration seem to let the blaster work in enough to do it's job. Then used long extensions and 1/2" ratchet to remove nuts. New pipe fit in perfectly 10 minutes to install and no leaks or check engine light. New gaskets from local auto parts store.

HC
04/21/2022
Hector C.
United States United States

Sounds great with my current setup.

This was not too hard to install granted i had my resonator back done via weld beforehand so i had to weld this in. And does this make my car just cone together, i have full bolt ons but the exhaust alone is just great sounding.

BB
04/14/2022
Benjamin B.
United States United States

2.2 downpipe

Love the sound and fitment, had to relocate upstream O2 sensor to the header but otherwise love it.

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