Which motorcycle is the most Lightweight that you can easily push upstairs?

Sorry if this a weird questions but i need a lightweight motorcycle so i can park upstairs since i don't wanna park downstairs coz aku takut motor aq kena rembat dengan mat gam or entire pit crew pulling up with 4X4 or white van. I have been looking at suzuki raider R150Fi and it look like the most kurus looking motor but I don't know yet are there more kurus than that? Any motor suggestions or another possible solution to my problem will be appreciated thanks