The GEN6 brings key improvements over the previous GEN5 model, designed to enhance reliability, performance, and ease of use . Key Features of the GEN6 Brushless Motor:
Key Features:

Second Sensor Port for easier fitting
Enhanced Rear Bearing Protection for increased durability
Sealed Motor Case for superior dust protection (IP5X rating)
Upgraded Solder Tabs (1.5mm thickness) for better stability
High-Temperature Soldering Wire for improved reliability