Team Powers Actinium V6S 21.5T Brushless Motor(Sensor) #TPR-BLM-215100ACT-V6S SKU:TPR-BLM-215100ACT-V6SEnhancements based on the Actinium V5S motor: 4~5% weight lighter through fine adjustment on Motor Can machining profiles Lower internal resistance for more efficient operation Revised rotor magnetic material for improved strength, efficiency and extend the fade out time Hand wound for maximum accuracy and efficiency ROAR approved and EFRA BRCA approval is proceeding Available Turns: 13. 5T, 17. 5T, 21. 5T, 25. 5T Specifications Based on IFMAR ROAR