【3000W Peak Dual Motor】: Equipped with 2 brushless 1000W(peak 1500W) brushless motors, with powerful 160NM of torque to help conquer the most rugged terrains, strong climbing power (40° Max climbing ability), up to 37MPH in pedal assist mode, 7-speed gear system offers smooth and precise shifting, allow you to optimize your pedaling effort, help you enjoy a super fast and super cool riding experience. 【52V 25AH Large Removable Battery】: 1300WH larger capacity battery(weights 13.6LBS), lockable and waterproof for convenient fully charged in 5-6 hours, the bike for adults can be up to 100+ miles per charge on pedal-assist mode, around 50+ miles on pure electric power mode. There is no need to worry about overcharging, the BMS will cut off the current automatically. 【Full Suspension System】: The upgraded full suspension ebike features lockable suspension fork, independent rear shock absorption, which can absorbs most of the bumps and shocks while riding. The 20" x 4" fat tires provide excellent grip and control, make it easy and comfortable to ride on rough terrain, such as dry land, muddy roads, smooth asphalt and loose sand. 【Dual Hydraulic Disc Brakes】: Offers more stronger and responsive braking power, the hydraulic brake can react sensitively with a slight squeeze, the front and rear hydraulic brakes could fastly stop your ebike from moving, ensuring your safety on any terrain or in any weather condition. Bright headlight and tail light, light up your night ride, Left and right turn signals indicate to other vehicles or pedestrians where you are going, provide a safer and more reliable riding environment. 【Individualized Riding】: 3 riding modes, pure electric mode, pedal assist mode, manual mode. The chromatic LCD screen with APP or bluetooth control, display various information such as distance, speed and battery level, easily record your riding mileage. Equipped with a USB charging port to charge your mobile phone. Arrives 90% assembled, you can easily finish the remaining installation according to the user manual or our installation videos. Our EUY S4 Pro electric bikes had passed stringent UL testing, Not only strong performance but also fashionable appearance. Under the power support of the 3000W peak high-speed motor, the ebike for adults provides you with a pure electric max speed of 37MPH. The packing included saddle, fender, charger, manual and so on. With this powerful motor, you can travel freely on mountain roads, sandy roads, snowy roads and city roads. It is also a good ideal gift for friends and family and for yourself! (Gently tip: If you receive your purchased item from our store , please keep the package box for a few days, do not just throw it away right now.)