Fits all Santa Cruz Blur XC2 frames (2.0, 2.1, 2.2) manufactured from 2009 through 2013. Includes 8 pcs Enduro MAX (full complement for greater bearing strength) cartridge bearings. 6 pcs are angular contact. 4 pcs are double-sealed. 2 pcs are shielded on one side and open on the other so that they can be serviced with a grease gun via the "Zerk" fitting on the linkage.