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2.5" to 3" exhaust adapter

6.2K views 6 replies 4 participants last post by  anothernt  
#1 ·
Well I currently have an Extreme PSI downpipe and an electric exhaust cutout welded in after that. I found a good deal on a Greddy Evo catback, and am looking to purchase it. My downpipe, which also replaces the cat, necks down to bolt up to the stock catback. I don't believe that the evo I am buying comes with the adapter to bolt to the stock cat. So I need to know where I can purchase one of these. I couldn't find anything on summit, I may try to post a wtb ad on the trader, for anyone that doesn't need theirs. TIA
 
#4 ·
Summit does have them. They are from Flowmaster and are merge collectors. The Summit part number is: FLO-R3025 and they are $21.88 for two of them. I used them for my I/C pipes to go to 3in for a GM MAF. They are nice quality peices.
 
#5 ·
Hmm, thank you for the info outbost. But those dont have flanges, and are much too long. I think if i used those the exhaust would stick pretty far out, unless you are talking about somehow slipfitting it together. This is a pic of the adapter so people will know what I'm looking for.

http://www.roadraceengineering.com/parts/greddy/evogst-adapter.jpg
 
#7 ·
doodie said:
Why don't you just get a dp thats long enough? RRE sells them for $230
The downpipe is long enough. That wasn't my question. The downpipe necks down to 2.5" to bolt up to the stock catback. The Greddy Evo has a 3" flange, so they obviously won't bolt up without an adapter of some sort.

On a side note, I found out that it does in fact come with the adapter, but thanks for the help guys.