This motor is a perfect upgrade for the 450 class helicopters. 

Compatible with - Align Trex 450 S, SE, DFC, Tarrot, Blade and many other helicopters

Please check the specifications are suitable for your helicopter

Compatible Devil 450 Pro.
Featuring superior efficiency, high power output, extreme torque, and low current, low temperature.
Incorporates radial fan in its end bell, creating powerful airflow to dissipate heat. Tweaks to motor design and reduction in weight not only contributes to dramatic power increase, the high efficiency cooling system enables cooler operating temperature during and 
after flights when compared to motor of previous generation.