Most bikes can be electric-assisted bikes. Internationally recognized brands like Bionx and Shimano STEPS can be retrofit or specified on bikes. There is a whole zoo assist kits available, and we’ve worked with a few of them. You get what you pay for. The electronics in them often aren’t as simple and bombproof as we’d hope. However, companies like Bionx and Shimano will support their product. Like it or not, electric assist is a whole different ball of wax. We can’t really fix any of it, but we can troubleshoot problems and replace hardware. We can also reprogram system parameters and update firmware.
There is so much variation in recumbent bike frames that we’d need to look at each case to specify exactly how a motor kit would fit to your bike. The Shimano STEPS system requires a specially built frame, but bikes with adjustable booms, where the crankset is on a separate piece, need only the boom modified. Availability of these modified booms is up to the manufacturer.
Currently, nobody is making a factory electric recumbent. ‘Nuff said.