Futaba S9451 Coreless Digital High Torque Speed Servo Savox Hitec Protek
This is the S9451 Digital Hi-Speed. Coreless Motor with two ball bearings on output shaft. High Torque. Torque: 8.7 kg-cm at 6 V. Speed : 0.10 Sec. / 60o degree at 6.0 V. The following was taken from Rcjazz website.