This piston kit includes the piston and all the seals required to change the piston.
KTM2013450450 SMRKTM 450 SMR 2013 <EU><F8403M0>
KTM2013450450 SX-FKTM 450 SX-F 2013 <EU><F8401M5>
KTM2013450450 SX-FKTM 450 SX-F 2013 <US><F8475M5>
KTM2013450450 XC-FKTM 450 XC-F 2013 <US><F8475M0>
KTM2014450450 SX-FKTM 450 SX-F 2014 <EU><F8401N5>
KTM2014450450 SX-FKTM 450 SX-F 2014 <US><F8475N5>
KTM2014450450 XC-FKTM 450 XC-F 2014 <US><F8475N0>
KTM2015450450 SX-F FACTORY EDITIONKTM 450 SX-F FACTORY EDITION 2015 <US><F8475O1>