EVO 8/9 Catalyst Replacement
PEP-EXT-100
Better Quality, Warranty and Performance with PERRIN!
Install Difficulty Rating
Special Sale Price, Only $195.00 (was $249.99)
Well if you clicked here you already know why you need a replacement catalyst, but just in case lets go over a few key reasons:
- You bought a used car and the cat is missing, because some bozo before you thought it would make more noise or something without it.
- The car you have has a ton of miles on it and the OEM is in need of replacement.
- The previous tune on your car was over fueled and cooked the existing one.
- A mechanic explained the OEM one is destroyed, missing or no longer functioning.
- You are OUT of the OEM warranty period.
Now that you know you need one; Why choose the PERRIN?
There are several reasons:
- Ours uses a 3” core and 3” ID plumbing to improve flow and reduce backpressure.
- The metallic 200cell per inch substrate is FAR more resistant to heat, and thus you can run more power and reduce the chance of another failure.
- Flanges are made from 1/2” 304 Stainless Steel to resist warpage.
- EPA Compliant in all states that do NOT require CARB Exemption. (Legal in California only on vehicles that may never be used on public streets and highways.)
- 5-yr 50K mile warranty
- PERRIN high quality welding
- US Sourced 304 Stainless Steel
- High Polished Finish for a Show Quality look!
- PRICE! We are able to offer this replacement at a fraction of the cost, even with all the quality and features listed above.
Now the question is: Why NOT Choose PERRIN? Order now!

NOTE: This item may be for
off-road use only in your area.
304 Stainless construction
1/2" Flanges
TIG Welded
200cell per inch Metallic substrate catalytic converter
EPA approved
Gaskets
Catalyst Assembly
Warranty
Instructions
Fits ALL EVO 8/9 models USDM 2003-2006
Below are the Dyno graphs using our Stage 1 tuning, and only exchanging the stock exhaust for our complete Turboback exhaust!
Download Instructions:
Right-click on the icon to the left. If you see "File Not Available", contact sales@perrinperformance.com .
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