Performance Top Speed: Up to 110-120 km/h/65-70mphMotor: 10,000W QS205 Gearless Hub (MTX 39 Rim)Controller: Sabvoton 100A Smart ControllerDisplay Options: UKC1 and UKC1 plusBest For: Extreme performance, aggressive riding, all-terrain use, high speeds. Includes 10,000W qs205 Gearless Hub Motor (MTX 39 Rim) 72V 40Ah Battery (Grade A cells) 100A Sabvoton Controller SW900 or UKC1 Display Twist Throttle Brake Levers with Cut-Off Sensors 12-Magnet PAS Sensor 2× Torque Arms Battery: 72V 40ah (A‑grade cells, Smart BMS)-All Arctic Ebikes batteries are equipped with an advanced Battery Management System (BMS) that continuously monitors voltage, temperature, and current to keep the battery operating safely and efficiently. Built-in protections against overcharging, over-discharging, short circuits, overheating, and excessive current draw help maximize battery lifespan while giving you complete peace of mind on every ride. The Arctic Ebikes 72V batteries are rated IP54, providing reliable protection against dust and water splashes, so you can ride confidently in light rain and challenging weather conditions. keep in mind This kit is for experienced riders who are looking for serious power and speed,150mm dropouts, Requires quick-release (open dropout) frame,Apply Loctite to rotor screws to prevent motor wire damage, this kit and battery are shipped separately and you may receive at different times.