I ordered Mac Ride with the Ebike adapter. It is really a well made and well thought out product. I especially like that it doesn't touch my carbon fiber frame and with the Ebike adapter I can use my frame bag in the winter to store extra water and the inevitable extras that come with taking a 2 1/2 year old anywhere! I have it on a 2020 Salsa Beargrease and I couldn't be happier!

important part ! keeps the adjustability of the macride with ebikes. sucessfully tested and proven with specialzed brose systems and Bosch batteries.
...and I must say I contributed also to this briliant solution :-)