SkyRC Ares Pro brushless motor
SkyRC introduce the Ares Pro competition brushless motor line. The 540-size motors make use of a vented T6 aluminium heatsink case and they feature high purity copper windings, heavy duty solder tabs, sintered neodymium magnets and dual sensor ports. The motors are build to meet ROAR and IFMAR rules and the very low turn variants come with a radial fan unit in the front end bell. Versions available include windings from 3.5T up to 21.5T with special stock motors and “even” 4.0T and 5.0T offerings hitting the shops also.
Source: SkyRC [skyrc.com]