The powerful BIRIA Electric Folding, Series 4, with upgraded battery, motor, and suspension fork.
You can fold up the bike and fit it in your trunk, or your closet.
With a 750 Watt (950 Peak) motor and 48V, 14 Amp LG battery (UL-2271
Certified), it has an average range of over 40 miles per charge with
pedal assist. It has dual Tektro hydraulic disc brakes with fat tires 20
x 4 1/4 and color display. This is a pedal-assist electric bike that
also has a throttle, but the throttle can be easily disconnected and
taken out in minutes. The upgraded front suspension fork will allow you
to handle any terrain, from off-road to the city. The S4 comes with a
rear carrier, front basket, fenders, front and rear integrated lights,
kickstand and a bell.