Serial 1 has now announced a new series of ebikes called 1-OFF, which, as the name suggests, is a line of Serial 1 pedal-assist rides that will enjoy a production run of just one. The first of these unique models is a chopper-style ebike that's being auctioned online from today.

The 1-OFF retro ebike has been named the MOSH/CHOPPER, and has a kind of Raleigh Chopper vibe to it – rocking a similar banana seat attached to a rear hoop or "sissy bar," a funky high-rise handlebar for laid-back cruising, and chunky tires. However, the builders of the new ebike – Milwaukee-based chopper builders Warren Heir Jr. and Kendall Lutchman – have gone for a Series 1 MOSH/CTY frame and both wheels are the same size (the front was smaller than the rear on the Raleigh bike).

"Customization is such an important part of the motorcycle ownership experience," said Aaron Frank, Brand Director at Serial 1. "For decades, people have been modifying their motorcycles to reflect their unique style and taste. The 1-OFF Series applies this same spirit of individualization and personalization to ebikes, showing people just how much fun it is to create an ebike that suits their own unique personality."