This is an electric motorcycle.

The frame is a 1977 Suzuki T-500 Titan.

It’s  has 4 12Volt, 55Ah Optima yellow top deep cycle batteries set up in series, for a 48V supply

You can see the continuously variable torque (CVT) transmission behind the batteries.

The gearing was set low for distance riding, so the top speed was only about 55mph.

It could be set higher for more performance, if need be.

This bike is street legal and registered in Massachusetts.