Electric Bike
Electric Folding ST 4.0 Climb more. Carry more.
An upgraded suspension fork, larger 48V battery, and torque sensor make light work of the hills — with smooth 3-inch tires, integrated lights, fenders, and front and rear racks.
The easiest way to get on a bike again
Three decades of refining one idea: a step-through frame that feels like an invitation, not an obstacle.
Pedal-assist that feels natural
The motor scales power to your effort, so hills flatten out and distance shrinks — without breaking a sweat.
Range for real rides
A high-capacity battery delivers dependable miles per charge, integrated cleanly into the frame for a balanced ride.
Equipped and ready
Integrated lights, fenders, and a rack come standard. Unbox, charge, and ride — nothing extra to buy.
Every part, no surprises
- Frame
- Biria Aluminum Folding
- Fork
- Hi-Ten Steel
- Rims
- Alloy double-wall
- Tires
- CST 20 x 3.0, Black Slick
- Gear
- 7-speed Shimano.
- Motor
- Bafang 500 Watt Rear hub Brushless
- Battery
- Lithium ion LG 48 Volts, 12.8 Amp
- Range
- Up to 55 Miles per one charge, with pedal assist 1 (Varies with terrain and rider weight)
- Speed
- 20 miles per hour
- Charging time
- 4-6 hours
- Stem
- Aluminum folding adjustable
- Handlebar
- Aluminum Straight bar
- Brake
- Tektro hydraulic Disc Brakes
- Saddle
- Selle Royal Ultra-Comfortable Gel
- Pedals
- Wellgo Aluminum Folding
- Weight
- 65
- Weight limit
- 300
- Rider height
- 4'10" to 6'0"
- Standard
- Charger, Front and rear racks, fenders, front and rear lights, Kickstand, bell
- Warranty
- 1 Year for Battery. 2 years for Motor, display, and Controller
- Package
- 81 lbs, 36 x 16 x 29 inches (L x W x H)
Complete your ride
View all
Ride it at a Biria dealer near you
Test ride in person, get fitted by a pro, and pick up your bike fully assembled and tuned.
Find a dealerFrequently asked questions
Bikes ship 85% assembled. We strongly recommend final assembly by a certified bike shop — we'll cover the cost at any participating Biria dealer.
You have 30 days to return for a refund as long as the bike comes back brand new and unused. A 15% restocking fee may apply, and you cover return shipping.
Most Biria electric models ship as Class 2 (pedal-assist + throttle, up to 20 mph) and can be converted to Class 1 by removing the throttle. Check the spec sheet for this model's motor and top speed.
Range depends on terrain, rider weight, and assist level — see the Range spec above for this model's rated miles per charge.
Frame warranty for the original owner; the battery is covered for 1 year and the motor/electronics for 2 years. See the spec sheet for model specifics.
