Great adapter of 3" down pipe to OEM catback. Fits perfectly
3 to 2.5 exhaust adapter
Great product, used it on my g37s to mount a 3inch ISR y pipe to stock 2.5 inch mid pipe, just had to cut the 2.5 side that comes off the mounting flange!! Looked everywhere no one makes something like this for the Z or Gs very happy I found this in a fourm
Just like every other product we purchase, Grimmspeed delivers excellent quality products
Quiet sleepy Foresters..
Got this & the downpipe gasket to interface the Grimmspeed divorced downpipe to the factory stock catback on a 2013 Forester XT. I like the ability to have high performance with quiet exhaust that keeps the car looking stock & slow. The absolute best thing about using this is that my tuner says he can tune my car for even higher performance with the VF52 upgrade - unimpeded by the factory quiet exhaust! Talk about a sleeper!
3” DP to stock Catback
Listen, I’m building a sick Forester XT sleeper and wanted to keep the stock exhaust for phase 1..... so I’m smart and do what Einstein, Copernicus and Musk would do... I turned to Art and the grimmspeed gang and made power with quality parts. This is exactly as advertised and has PERFECT Fitment.
No more leaks
I needed to stop an exhaust leak and this adapter sealed it nicely. My J-pipe isn't from Grimmspeed, but it works just fine. I bought it with the thicker 3" gasket and donut gasket. Now I have proper boost pressure.
Great quality part and all hardware was included. No fitment issues whatsoever. Always a pleasure doing business with you.
I recently purchased a 2nd one. The first one I gave to my brother along with a my stock STI exhaust to fit up to his FXT w/downpipe. It was still in great shape and installed perfectly. The new one I got was fresh and well constructed just like the first. Price is right, quality is great, service is 2nd to none, and I have another GrimmSpeed sticker to add to the collection. :D
I like it
It's a great adapter. Makes a good seal from a 3" downpipe to a 2.5" stock exhaust. Just make sure to also order the OEM donut seal.
Great Fitment, easy to install
I'm planning on keeping the stock cat back for at least the next few months so this piece was a must. Installation is a breeze while doing the downpipe. Great fitment, no leaks. Included hardware and gasket was much appreciated.
I purchased the Grimmspeed downpipe and I have an SPT exhaust. I love the exhaust but not the 2.5" reduction at the flange. Still I want to keep the exhaust.
Enter the Grimmspeed downpipe adapter. It does what is stated and is the best resolution for the 2.5" issue some of us face.
top quality welds and plated as well. Another great product that is simple to use.
This kit allowed for a clean installation of the catted jpipe while also allowing me to maintain my stock CBE for the time being for idle/around town stealth and still get 95% of the power from the jpipe.
Worked perfectly! Great fitment!
Sealed up my ebay downpipe to my stock catback with zero leakage. I used the oem donut and the shoddy ebay graphite gasket and it sealed and fit perfectly!
Quality product, bolts too short
This is a quality product and I recommend it to anyone who is needing to mate an aftermarket 3in DP to an OEM or OEM-like 2.5in catback exhaust (a Borla CBE for example). Fit well, thick metal, high quality. This would have been 5 stars but the included bolts were not long enough! Wouldn't fit. A quick run to the hardware store was all it took, but c'mon guys, you took all that time and effort to make a top quality product, only to skimp on the bolts?!
Tip to buyers: don't forget to add the donut gasket to your order!
Matt@GrimmSpeed: Give us a call and we'd be happy to send you the correct hardware! We've never had this issue, so I suspect that either you've got an exhaust fitment issue or the wrong bolts were packaged accidentally. Either way, our customer service guys would be happy to help.
DP install MUCH easier
This adapter made my Invidia DP install MUCH easier, and, most importantly, with the doughnut gasket, sealed well! As with all GS products, this piece is very "over engineered", with a nice beefy flange and a nice smooth transition between the DP and the factory cat-back. Anyone who is thinking of installing a DP to a 2.5" CB should consider this a necessity! Great product that no one (except GS) seemed to think of before...genius.
Top notch quality
Just received mine today. As usual the quality is top notch! The flanges are thick & the welds are perfect! I had recently purchased one from another vendor and the Grimmpseed adapter FAR exceeds the quality of my other adapter.