What indra said; my singular also was 7kg without any WW parts. My FM066 with Di2 and P2M is 8kg. So 6kg is what you should aim for a true WW project.
Aero fork on hill climb bike >>>>>>>>
20mm rims 24/20h; latex tubes etc. or tubs even; chinese fork (my fm066 fork is just above 300g) and seatpost; kalloy stem; ultegra + USE @Sumo style crankset, KCNC seat pin etc. and you will be looking at 6kg-ish.
What indra said; my singular also was 7kg without any WW parts. My FM066 with Di2 and P2M is 8kg. So 6kg is what you should aim for a true WW project.
Aero fork on hill climb bike >>>>>>>>
20mm rims 24/20h; latex tubes etc. or tubs even; chinese fork (my fm066 fork is just above 300g) and seatpost; kalloy stem; ultegra + USE @Sumo style crankset, KCNC seat pin etc. and you will be looking at 6kg-ish.