Checchin, M. JACoW Publishing Geneva, Switzerland The LCLS-II HE project is the energy upgrade to the superconducting LCLS-II linac. It consists in adding twenty-three additional 1.3 GHz cryomodules to the linac, with cavities operating at a gradient of 20.8 MV/m with internal quality factor of 2.7·10¹0. Cavity production and cryomodule assembly are currently in full regime. Cavities are being manufactured in industry with a modified doping recipe and surface processing compared to LCLS-II production. This allows to achieve ¿ and exceed ¿ the more demanding specifications of LCLS-II-HE. The cryomodules are assembled and tested at the two partners labs (Fermilab and Jefferson Lab) similarly to LCLS-II and then delivered at SLAC. Test data demonstrate the high performance of the cryomodules currently being assembled: the usable voltage gain per cryomodule is in average 206.8 MV, exceeding specification by 34 MV, and the average Q-factor at 20.8 MV/m is 3·10¹0. Based on the current data, we expect to continue delivering high performance cryomodules and move successfully to the installation phase of the project.