Harley fanatics are about to lose their collective shit. The crew from Milwaukee is going to show off its first electric motorcycle tomorrow, causing scads of chap-wearing dentists to revaluate their alternative weekend lifestyles.

The video above finally confirms the rumors that have been circulating for the past 24 hours.

A Scarlett Johansson stunt-double was caught on the set of the next Avengers flick riding a Harley-badged electric bike. And as pointed out by Visor Down, the build appears spot-on for a street-legal bike.

The pre-production motorcycle has everything necessary to meet U.S. safety standards, including mirrors, front and rear reflectors, a massive rear tire hugger, and off-the-shelf braking bits. If this was just a prop, they wouldn't bother. And these "spy shots" are obviously very suspiciously timed.

We don't have any specs yet, but based on the size and style, we're guessing Harley's e-bike will be more in line with the Zero SR rather than the Mission RS.