Have a search first. The lightest racquet would probably a prototype racquet not known to the public. The lightest racquets produced by Yonex are 4U (80-85g), and they don't get any lighter than that. Almost all Armortec racquets come in 4U, and so does MP88.
There is no 5U racquet by Yonex. The lightest you'll get is an underspec AT or MP88, then shave to handle down to like G7 or something, then get rid of all of the paint. Easily 6U or something.
from the guy hu wanted info on superlight go to the black knight website or search it at courtsidesports.com or search it on any search engine it should come up
nah i read in a post earlier that the karakal m-tec is 70 cuz its only the shaft , the grip isnt included in the weight calculation
Karakal M-Tec 70 All rackets are weighed without grip or string...Karakal is known through out the world as the lightest racket made and the only other one I know of is Ashway which is I think 72 gram...Anyway, when you get this light it is strictly a defensive racket...