Coming from XRAY and made for the XB2, XB4 and XT2 are the 12mm aluminium wheel hubs. CNC-machined 12mm wheel hubs made from Swiss 7075 T6 have +4.5mm offset for wider track-width. Strategically machined for optimum strength, balance, and lightness. They are also marked for easy identification and secured on drive axle by setscrew. Available as pair.