This motor is for the EF 78" Extra, 78 Edge, and 83" MXS, and for milder power on 85" Extra 300. 12S Lipo operation and 120 Amp HV speed controller minimum. 

40CC notes: Our testing carried out on Castle firmware V4.22, expect 90 amps on fresh 12S lipo packs using largest prop, for approximately 4,100 watts. (Castle firmware 4.22 was written specifically for the XPWR motors, it is the best firmware in the castle catalog for our motors, please backdate your firmware to 4.22 using your Castle Link)

Weight: 870 grams (including radial mount and prop adapter)

KV: 200

Pole: 24 Stator Poles

Bullet connectors: 6.5 mm female installed, male bullet connectors included

Recommended prop: 21 x 10, 21 x 12 or 22 x 10 ELECTRIC PROPS ONLY

Note on using largest prop recommendation for each motor: The largest prop recommendation for each motor is a maximum-performance prop for 3D and extreme aerobatic flying. It is not needed or recommended for sport flying where long, sustained full-throttle usage is intended. It is for aerobatic flight where full-throttle is used in bursts.

Maximum temperature (on outside of motor): 175F / 80C