Standard cup and cone bearings with fat seals mean a long life and easy serviceability - plus a pack of bearings will cost about a quid from any local shop, no need to order in expensive sealed units.
"The new XTR rear hubs offer improved performance any rider will appreciate. A quicker engaging freehub body, improved durability and increased rigidity are included in a disc & non-disc XTR rear hub."
Angular contact (cup-and-cone) bearings and oversize alloy axles for increased wheel rigidity, precision bearing adjustment and easy maintenance
New freehub body design for quicker pawl engagement (more than 125% faster compared to older model)
New seal design Improves seal performance by 400%
Center Lock rotor mount system (6-bolt adapters are available)