I was just browsing and saw you post. Go to https://www.yamiya750.com/
I have dealt with them many times and they are top notch. Go to the exhaust
section and they have them to be released in May. I have a set and they are great.
Hope this helps.
sweet you can try YAMIYA.com as they have them reasonably priced from Japan though they charge for shipping. Or Ebay has them at times. Just compare and you can get them reasonably priced at times. Hope this helps.