Saris MHS 2-Bike Rack Now Certified to Carry Up to 100lbs Per Tray
Briefly

Depending on the model, ebikes can be extremely heavy which could potentially overload your hitch rack.
Saris MHS bike rack weight limit increased to 100lbs per tray after extensive testing for safe transportation of heavier bikes.
If you run the third bike add-on, weight limit drops to 80 lbs for the first two trays, and 35 lbs for the third, elevated tray.
Read at Bikerumor
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