A Japanese seller on EBay is offing a chamberish style cross over 2 into one pipe for AC RD250-350's as well as other Rd's and RZ's.... anybody have any experience with or thoughts on the style?
jeff
https://www.ebay.com/itm/396558754585?_skw=rd350+chambers&itmmeta=01KQR9YWFRTAJ63Q41BM5BAEP7&hash=item5c54be6319:g:eqsAAeSwGIhoFDnm&itmprp=enc%3AAQALAAAA0GfYFPkwiKCW4ZNSs2u11xBPJNk6j%2BuL%2FEHsgV3iXb3RkyDp42L4dFbBfEhAgpAtDeML0DtSSNOdHgUzZuBxQHqHxMZvfl8wLDVa5cmAxijWJoG1%2BzjlziZm%2BVi7X9rMZ1FsWbmPfQArVUPpl6F3MkbAQ2z7dOk%2FoKuu%2FagR%2BDY3rq5fgvXxAtodl38ZsMb8DwsR%2Fxls%2BXV6q0rKAapoxY%2BK0TNDIkkwWbkPICUxett2ZqX0dh88Riz20qB6vdSX%2FBPnJsmoG8Yiw1n9XPX%2BJzU%3D%7Ctkp%3ABk9SR4LI-4m-Zw
id be more inclined to get the spitfire ones out of indonesia than these. 2-into-1 2 stroke pipes kill all topend on a street bike. I have ridden a triple, and a twin w them. def not great most of the time. my 0.02
Thanks Mark, I appreciate the feedback on the 2 into 1 configuration.
jeff
Two into one pipes sound sweet, check out the video in the link.
https://www.wickedatv.com/product-page/the-wicked-2-into-1-viper-banshee-pipe (https://www.wickedatv.com/product-page/the-wicked-2-into-1-viper-banshee-pipe)
Wicked motorsport is making one for banshees that actually seems to work quite well
Quote from: m in sc on May 03, 2026, 10:11:18 PMI have ridden a triple, and a twin w them. def not great most of the time. my 0.02
I can't remember his name/screen name (maybe triple-triple nut) but it was Walms (Andrew) buddy from the Canadian boards that I think was designing/working on a 3-1 pipe with Walms for the Kawi.
Did they ever get that off the ground before he passed away?
i think so.
That Wicked design is similar to the way that they do 3 into 1s on a sled with very short header section. The first one has two parallel headers into what is barely any sort of chamber, so I would expect performance to be worse than stock but with a cool sound.