Factory Chassis

When a male or female has a perfect figure. Nothing is out of proportion, as if sculpted by the most skilled hands in the world. Also known as "hrc chassis" (Honda racing corporation)

"did you see that girl who went the other way?"
"no mate, any good?"
"she had a factory chassis for sure"
Or
"who was that guy you were dancing with last night?
"I can't remember, but his chassis was 100% hrc"