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VST2 Pro features a new sensor design for outstanding performance and optimized efficiency. The case is a robust CAD design made out of high-grade aluminum machined at an extremely high level of accuracy and quality. Perfectly balanced rotors are used together with high quality stator materials. R&D manager Oscar Jansen also included a new rotor installation tool which makes it easy to rebuild your motors - and a sensor cable holder which at the same time protects the solder tabs ! World champion technology 4 pole sensor motor Dual sensor port New sensor design improves performance and efficiency Alloy case with improved ventilation system Low resistance solder tabs High quality stator materials Precision balanced rotor VST2 Pro 540 4-Pole Brushless Motor Specs: Current: 90A Diameter: 35.8mm Efficiency: 92% Poles: 4 Power: 750W RPM-V: 4600kV Shaft Diameter: 1/8" (3.175mm) Length: 52.8mm Weight: 188g "
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