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Dec 17, 2025 - 11:33 AM
We’ve provided several answers to questions related to PolarStar Fusion Engine Trigger Board for V2 Gearbox GEN3 , see some other helpful Q&A related to this product.
Question: Would this work with the older revision of the fcu? Or only with the rev3 ones? Ive got an old fusion engine that needs a new board.
Answer: If your FE has the blue selector plate, this new board will not work. But if it's the black AEG type plate, the electronics should be fine.
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