Introduced in 1970, the Rokon RT140 (RT = Rokon Trail, 140 was displacement) was built to get a slice of the trail bike market that had become so popular. It used the same pull-start 140cc engine that you’d find in a Snorunner, and an automatic transmission. If you believe the seller, this chopped RT140 was built by a Rokon employee at the factory as a one of a kind bike.
The frame has been raked and stretched, and the front end has been widened. The seller (New England Motorcycle Museum) is selling it to help with renovation costs, and they’ve put up a video with some information about this bike, including what it looks like with a 6’2″ guy on it (not as cramped as I expected):
Find this RT140 chopper for sale in Vernon-Rockville, Connecticut with bidding up to $1,500