Upgrades: SRAM Red power meter crank, and Enve 5.6 disc wheels (tubeless Pirelli Cinturato 26c with 40ml Orange Seal).
The crank upgrade cut roughly 0.5 to 0.7 pounds:
Source: SRAM Rival AXS review: This is the wireless setup you’ve been waiting for - CyclingTips
No idea about the wheels, but likely cut some weight there too.
After visiting the fitter I’ll put the Enve aero handlebars on.