Speed: Pedal Assist: 28mph Throttle: 20mph (Class 3) Motor: Sutto 500W 48V Brushless Motor Pedal Assist: 5 Levels Range: 30-60 Miles Battery: Lithium-ion 48V, 14Ah, UL2271 Certified Lights: Intergraded Headlight and Battery operated taillight included. (Wired for integrated taillight) Tires: Serfas Voltage 27.5 x 2.35 Handlebar: Aluminum Comfort Bar Frame: 6061 Aluminum Alloy, 2 Frame Sizes: Small/Medium, Medium/Large Display: 1.6" Backlit, Easy Read Display Brake: Dual Piston Hydraulic Disc, 180mm Rotor Shifter: Shimano 7 Speed Twist Shift Derailleur: Shimano Touring Stem: Adjustable Comfort Stem