Hobbywing has released FAN-3010BH-5V-10000RPM@5V-BLACK-A 86080150 under Cooling Fans Motor / ESC / Cooling Fan category
With this fan installed on your own ESC heatsink, then you'll undoubtedly have the most cooling performance.
Specifications: Ball Bearing / Non-waterproof / JR-3P Male Plug / L=200MM
Applications: regular applicaion. well suited for engine air-con