https://www.porcupinerc.com/FMS-Motor-4250-KV540-14M-P-51D-P-51B-P47-F4U_p_665.html
FMS Motor 4250-KV540 (1.4M P-51D/ P-51B/ P47/ F4U)-PRKVX540
FMS Motor 4250-KV540 (1.4M P-51D/ P-51B/ P47/ F4U)- Specification:manufacturerNoDimension (mm)?42.3*100Weight (not including connectors)245gVoltage (S