I haven't paid much attention to full exhausts of late.
Used to Sato had the low, mid, and banzais. Then they dropped the mid's.
Checked and their site now only shows low mounts (which give the best power BTW).
I'd suggest checking other RC51 forums as well. Some pop up from time to time.
Or check accessory sites for closeout specials. That's how I bought my Akrapovic system.
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