Seat -> SLR =- 100g, to AX Lightness = -180g
Wheel= EA ~1700g -> any 1400g pairs like Hed (or tubulars) =-300g
Your tyres must be heavy -> Michelin Pro 3 Race
Brakes to Zero Gravity= -70g
Chain to Record 10s -20g, Cranks to Record -70g
Pedals? What model? Any Speedplay cuts bit.
I build lot of light Cervelo's...