Our new KRATOS TEN 10-pole sensored brushless motors deliver unmatched control that competes with the best of the brushed motors but provides the reliability of brushless power. The result? The fastest-slowest motors money can buy. We are proud to have the first 10-pole inrunners ever produced in the market! These powerhouses offer the best of the best in low speed control and power. The 2750kv is rated from 2s-4s. ESC Type: Castle Mamba X, Monster X, Micro X, and Copperhead.Optional wiring kit not included.Features:* 540-sized sensored brushless motor* 10-pole kevlar wrapped rotor * High-grade neodymium magnets for optimum power and effiiciency* 12-slot stator* New phase-magnet isolation design* 3.175 pinion shaft* Gold-plated solder tabs, for low resistance / protection against corrosion* Billet CNC one-piece shell with end cap for durability and improved cooling.* Waterproof Technical Specifications:* RPM(kv): 2750* Construction: 12s/10p* No-load current@7.4v: 2.5A* Operation Voltage: 7.4v-16.8v* Max current: 120A* Max efficiency: 91%* Max working temp: 302f* Dimensions: L52.5 x D35.5* Weight: 165g* Pinion shaft: L15 x D3.175 Wiring kit is not included: we do have a kit available on the website.: includes 12AWG silicon, high-strand wires, 4mm gold bullet connectors, and sensor wire with gold-plated connectors