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R1 Brushless Motor Lab, LLC.
ITEM# 020059 Replacement Short sensor board for all R1 motors (V16/V21-S) This product produces high amounts of energy and potentially very dangerous. Please read the manual...
This is for the long rotor (replacement) only. To upgrade to this long rotor, you will need a short sensor board linked here https://r1wurks.com/collections/25-5t/products/25-5-v21-sensor-board-020059 You can...