EMAX ECOII 2207 Brushless Motor 6S 1700KV/1900KV 4S 2400KV For FPV Racing Drone Features: ECO II 2207 Stator - For 5" Propeller Racing and Freestyle Craf. The engineers at EMAX are always seeking ways to design the ultimate motor with brushless technology. In their efforts, they produced the ECO II Series, a new line of brushless motors further improving on the performance and durability while retaining the same affordability. Redesigned from the ground up, the ECO II boasts an all new architecture. With a more rounded design paired together with thicker reinforcements, maximum durability is achieved. Finished with a reflective surface, the ECO II offers a sleek modern design destined to satisfy the need for both aesthetics and durability. In order to improve the performance from its predecessor, the ECO II utilizes N52SH arc magnets over prior N48 magnets, allowing more powerful throttle response and higher RPMs to be achieved. More torque and thrust is generated, allowing pilots the flexibility to comfortably meet the demands of any racetrack or flight situation. A brand new design with a rounded bell and attachment points for increased durability. Fully mirror-polished finish that shines and glistens with even the smallest hint of light. Upgraded N52SH curved arc magnets for tighter airgap and better performance. EZO 9mm bearing for unparalleled smooth operation. 16x16mm motor mountingPrecision bearing. Steel shaft Anodizing 16x16mm hole pattern Multi-strand winding 120mm 20 AWG silicone wire SPECIFICATIONS: Brand: Emax Item Name: EMAX ECO II 2207 Motor KV : 1700KV/1900KV/2400KV (Optional) Framework: 12N14P Length: 33.2mm Diameter: 27.5mm No.of cells: 3-6S 1700KV No.of cells: 3-6S 1900KV No.of cells: 3-4S 2400KV Propeller: 5"-5.5" Weight: 33.4g(W/O Silicone Wire) 1700KV Weight: 33.6g(W/O Silicone Wire) 1900KV Weight: 33.5g(W/O Silicone Wire) 2400KV Prop adapter shaft thread: M5 Bearing Shaft4mm Shaft ThreadCW Package include: 1 x EMAX ECO II 2207 Motor 1 Pack Screw (5x M3x8,5xM3x7,5x M3x6,1xAluminum M5 nylock nut,1x Washer and Screw for shaft) 1 x Stickers