Included are all rings and gaskets for the Monoshock. Fits for 150/200 XC, 250/450/505 XC-F ’08-‘09, 144 SX/250 EXC/505 SX-F ’08, 150/250 SX, 250/300 XC ’08-‘11, 250/450 SX-F, 450 SMR ’08-‘10 and 150 SX ’09-‘11. More more info please look into FicheFinder.