Electric set Magic Pie 4 rear drive motor-wheel assembly 20 "inches cast disc Motor-wheel Magic Pie rear 20 '1500W 48V + control + controller 1. Programmable voltage: 24/36 / 48V; 2. Programmable power: 250/500 / 750/1000 / W; 3. Programmable start: Fast / Medium / Slow; 4. Regenerative braking (battery charging during braking); 5. Cruise control (constant speed); 6. Reverse is possible (Forward / Reverse); 7 Durable (up to 100,000 km) 8. 30% higher Torque (Max:> 70 N * m) 9. Dual mode sensor control and without sensor 10. Easily replaceable internal controller with upgraded MOS transistors; 11 Better heat dissipation with self-cooling, 60% heat removal 12. Waterproof wire set with silver plated plugs for easy connection 13. Sine controller 80A peak current, super quiet motor!