I don't have an electric longboard but I push at my driveway and I make it down the street and they are so smooth and quiet.
this is a classic example of you get what you pay for. Top-notch bearings with best free roll along with best range.. never go cheap on bearings!
I bought these bearings for a set of my AT tires and they worked so well and they are so fast and smooth so I bought one more set now with the holidays sale for my other set of AT 7'' tires.
No spacers needed and they roll best on my 110TB
High quality bearings that are very smooth, and feel like they will last. Fair price too!