This is the 7.5 Turn Hobbywing Xerun V10 G3 Competition Modified Sensored Brushless Motor. The V10 G3 Motor line has seen significant improvements over the previous G2 series, for both the Modified and Stock motors. Some updates include an updated can design that promotes easy of maintenance, a special shell design for maximized cooling, high-performance stator core, heat-resistant wire (200¡ÆC), lower weight and more.
Features:
Specifications: kV: 4420 LiPo: 2S Resistance: 0.0074 No-Load Current (A): 3.3 Max Output Power (W): 346 Current @ Max Output Power (A): 100 Diameter/Length (mm): 35.9mm (1.41in)/51.2mm (2.01in) Shaft Diameter/Length (mm): 3.17mm (0.125in)/13.3mm (0.52in) Stock Rotor: 5-12.1 Sensored: Yes Brushless: Yes Poles: 2 Weight (g): 161 Applications: 1/10 Drift, 2WD Off-Road Racing
http://hobbywing.com/products/enpdf/XERUNV10G3.pdf