Built with improved manufacturing techniques, the brand new 2312E motor represents a significant upgrade over the previous 2312 model. The optimized electro-magnetic system boosts efficiency by nearly 7% and lowers cogging torque, which provides noticeably smoother performance at low RPMs. A newly designed motor base not only provides better heat dissipation, but also a more advanced, hi-tech look. Specs • Stator Size：23×12 mm • KV：960 rpm/V • Weight：57 g