The great performance and small size of the E-flite 400BL motor make it a perfect match for RC Helis. The high RPM per volt (3500Kv) design allows for high RPM / ballistic output at your fingertips. High Torque alternative to inrunner brushless motors for 400/450 size Helis. Slotted 9 - pole outrunner design with high quality construction and ball bearings / hardened steel shaft. Very quiet, lightweight operation and just 2 ounces (56 g). Efficient operation with external radial rotor design.

Specially designed for Hummingbird 3D Pro. Very light weight and extremely powerful. This motor will outperform motors that cost three times the price. While doing extreme tests, other motors will increase in temperature very quickly and burn out. This motor is capable of maintaining that RPM without overheating.

The Scorpion HK-4025 motors have been developed for the newer 550 to 600 class electric helicopters that are now coming onto the market. These motors are designed to provide all the power that you can use, while still maintaining excellent efficiency and cool running characteristics.
For those of you that have been patiently waiting for the new 600 class Helicopter Motors, the HK-4025 series has finally arrived! These motors provide around 2500 watts of power to take your 600 class helicopter to new performance levels. The HK-4025 motor is available in 3 different Kv values: 890Kv for 6 to 8 Li-Po cells, 740Kv for 8 to 10 Li-Po cells, and 630Kv for 10 to 12 Li-Po cells.

Specially designed as a High-Performance upgrade for most micro helis. The E30 motors can handle the long runtime and high temperatures that are experienced when paired with 3S (11.1 volt) 730 - 1320mAh Li-Po (Lithium Polymer) batteries.