Performance Top Speed: 80-90 km/h/55mphMotor: 3000W Gearless Hub (MTX 39 Rim)Controller: 60A Smart Controller (XT90)Display Options: SW900 or UKC1Best For: Extreme performance, powerful riding, all-terrain use Estimated Range: 20AH 70–110 km, 30AH 95–145km, 40AH 145–190km. Includes 3000W Gearless Hub Motor (MTX 39 Rim) 72V 20Ah /30Ah/40Ah Battery (Grade A cells) 60A Sine Wave Controller SW900 or UKC1 Display Twist Throttle Brake Levers with Cut-Off Sensors 12-Magnet PAS Sensor 2× Torque Arms Battery: 72V 20ah-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 135mm dropouts, Requires quick-release (open dropout) frame,Apply Loctite to rotor screws to prevent motor wire damage, please measure your bike frame to ensure the battery fits before purchasing.