This is the returner R4 2206 race spec brushless motor, is the next iteration of the impressive returner series of brushless motors from brotherhobby.  Known as many other brands such as ZMX Fustion, Hyperflite, the returner series are designed to give impressive performance to give you the edge in FPV racing.   The R4 has upgraded EZO bearings (among the best bearing brand for brushless motors) along with a virtually unbreakable titanium alloy shaft.  Although this motor is abit more expensive than others such as the RS2205-S from emax.  This motor should outlast other competition and also survive more crashes, did I already mention it has a titanium alloy shaft?

Specifications

• Configuration: 12N14P
• No.of Cells(Lipo): 3-5S
• Rotor: N52H arc magnets 
• Wire AWG: 20AWG
• Shaft: Titanium Alloy hollow shaft
• Stator: 0.15mm Nippon Steel silicon steel
• Bearings:  Japan EZO 4 x 9 x 4mm ( 684ZZ )
• Base casing: Al 7075 
• Bell cap: Al 7075 ( Double Anodizing colors )
• Weight:28.6G