Sunrise Models has always been a great source of manufacturing high quality OEM speed controllers along side their own line of products. They currently manufacture the Aikon series of esc's and now are getting back into the fpv scene with there newest 32 bit 6s 4in1, the Siskin 41 amp 6s 4in1 esc board. Don't trust your high voltage racing builds with just any esc, go with the brand that other brands turn to.
Specification
Siskin BL-32 41A 4in1
Con. Current: 41A
Peak Current (10s): 55A
SBEC: 5V/2A
Battery: 2-6S Lipo
Weight: 13g
Size(PCB): 36*36mm
Mounting size: 30.5*30.5mm