Holesom's Holy Roller precision longboard skateboard bearings were definitely brought to us by a high power. They are Abec 9 Rated and each bearing has a bearing spacer built right into them. The spacers extend slightly on the outside of the bearing so that you do not need speed rings either.
There is an extremely tight feel between the bearings and the wheel. The energy between turns is absorbed by the wheel and not the bearing itself reducing impact and side load. Ultimately, you will have a bearing that will endure the demands of a downhill racer or any skateboard discipline.
