The stock original front wheel bearings are the "ball" bearing style. This system works great and can last a long time, but with the advent of wide and stocky tires the loads put on them are tremendous. Timkin "tapered" bearings that better absorb side loads are now available for all Sprites and Midgets. Just as important, they are direct replacements-they work! Several cheaper versions have been available over the years that have not been as precise. 2 kits required per car. The bearing kit does not include seals. Sold seperatley see part number GHS102.