- Premium level hubs come with premium-grade stainless steel bearings and races 

- Foundation level hubs come with premium-grade steel bearings and races. (All replacement/repair kits will include Stainless bearings regardless of OEM bearing. Bearing Sizes are the same for Foundation and Premium hubs.)

- Non-contact inner bearing seals to reduce rolling resistance

- Full-contact outer seals ensure debris free performance and bearing longevity