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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. FRAME - Biria Aluminum Folding FORK - Suspension RIMS - Alloy double-wall, ultra light with cut-outs TIRES - CST BFT 20 x 4.0, Black Knobby GEAR - 7-speed Shimano STEM - Aluminum folding adjustable HANDLEBAR - Aluminum Straight bar BRAKE - Tektro Hydraulic Disc Brakes BATTERY - Lithium ion LG 48 Volts, 14 Amp, UL 2271 Certified MOTOR - 750 Watt (950 Peak) Rear hub Brushless DISPLAY - Color LCD RANGE - 40 Miles average per one battery charge, with pedal assist (Varies with terrain and rider weight) SPEED - 20 miles per hour CHARGING TIME - 4-6 hours SADDLE - Selle Royal Ultra-Comfortable Gel PEDALS - Wellgo Aluminum Folding ASSEMBLED WEIGHT - 68 lbs. FOLDING DIMENSIONS 40 x 17 x 31 inches STANDARD - Fenders, Front basket, Rear Rack, Integrated Headlight and taillight, Charger, Kickstand, Bell RIDER HEIGHT RANGE - 5'5" to 6'8" WARRANTY - 1 Year for Battery. 2 years for Motor, display, and Controller.