I got everything on the bike tonight and took it for a test ride of a couple miles. I will say I didn’t notice a lot of drag. The bike felt heavier, naturally, but it didn’t feel like much electrical/magnet drag at all. There was one point when I went off of a sidewalk and two of the wire ends touched. All of the sudden there was a Lot of drag and could definitely feel the notchy feeling of the magnets passing in the motor. Otherwise it felt similar to when I load up bags for a bike-packing trip. That makes sense to me given that the kit is adding a lot of weight and slight motor drag to the bike.