It isn't like you can cut the bike in half. When weighing the front wheel, it seems some weight from the rear half of the bike would still be felt and vice versa.
This is absolutely stunning!!!!! What kind of wheels? OEM monocoque? Is your SBK electronics remarkably lighter than the OEM stuff?
I use a 200kg (china) digital crane scale, I guess real accuracy is +/- 1lbs.
The electronics dropped a lot of weight by ditching the entire stock wiring harness, ABS pump, etc.