3.1 High efficiency (>90%), the additional heat-sink is unnecessary in most applications.
3.2 New design with lighter weight but bigger torque.
3.3 Higher power than the competition, faster acceleration and higher top speed.
3.4 Top quality materials:
Aluminum shell (case)
High quality magnets         
Copper wires of high temperature endurance         
Good quality bearings
3.5  Anti-broken rotor with special workmanship.

Brushless ESC for 1:8 Car (Purchase separately )