All thanks to u/pdoron on Reddit!
R Kit: 6″ x 8-3/8″
Mellow: 6-3/4″ x 9-3/4″
So the Unlimited is
nearly over an inch shorter than Mellow! [Needed more caffeine!]
I can use this info when my obsession over choosing a deck is awakened again.
Unlimited And Mellow Drives Compared By An Owner
eSkateboard Of Lust: Unlimited Drive + Carbon-Fiber Deck
Unlimited/Mellow Drives: Sizing Things Up Sometimes Sucks
Ride Unlimited’s Electric Skateboard Drive
Reference: eSkateboard Weight Frustration, Again
Today Was BoardUp Research Day
Reference: eSkateboard Weight Frustration
Mellow Drive On A Folding Skateboard
The In-Progress Eon eSkateboard Kit