Evo TS-MI-EVO2260-HP High Power version : 40x90mm : 6 Pole MotorThis "High Power" version has a larger 40mm case which makes more watts than the standard evo-2260(38mm) while at the same time making it a more standardized size, it's now easier to find motor mounts and water jackets. See picture 2 for the motor chart* and picture 3 for the diagram. 1. Powerful 6-pole core design for high torque output.2. Advanced assembly technology enables more efficient space utilization.3. CNC machined aluminum casing4. Silver windings for higher efficiency.5. Powerful sintered neodymium magnets6. High torque torque-to-weight ratio.7. The hand-wound weaving of the winding ensures the motor has excellent electrical characteristics! 8. Include a water jacket with an internal water channel to ensure water flows around the motor 9. High grade bearingsSpecs:Magnets: neodymiumWatts: 7500Poles: 6Motor Shaft: 5mmShaft Length: 15mmCan Measures: 40mm diameter x 89.5mm longWeight: 520 GramsMounting Screw diameter required: 3mmBearing size: 5mm x 14mm x 5mm Connectors: 5.5mmOSE Suggests 30,000-40,000 total rpm. These are only guidelines, we suggest if you don't know how to pick the correct motor, please consult OSE first or other members of the RC Fast electric boating community, either at a local club or on our OSE Forums. * It is important to note that the "Max Amps" value represents the maximum recommended operating current for the motor. It does not indicate the maximum current the motor can draw. For instance, the 1550kv motor has a "Max Amp" rating of 165. This means the motor should not be operated at a current exceeding 165 amps. However, this does not imply that a 180 amp ESC will be compatible with the motor. Instead, the user must select a propeller or gearing that prevents the motor from exceeding its "Max Amp" rating. It is important to note that the 165 amp motor can and will exceed the 165 amp range when pushed beyond its limits, for a short period of time.