Replacement freehubs are available for 3.30R/RTi/RD/RDTi hubs for Shimano and SRAM 11 speed cassettes. Includes: 11spd freehub body, spacer, seal, pawls, springs and a 1.8mm spacer for 9/10 speed compatibility. Can be used to upgrade existing Stan's 3.30R/RTi/RD/RDTi to 11 speed. This freehub will NOT work with 3.30/3.30Ti model hubs.