Prepare to be utterly butterly astonished........
Cessna 152 - Wikipedia, the free encyclopedia
Look under 'variants' - specifically the 'aerobat' version
Wikipedia is hardly conclusive but its the best I can find at short notice. I know for sure 'cause its placarded in G-BHEN (the aircraft I usually fly) and stated quite clearly in the POH - not that I have been anywhere near that!
As I understand, to be categorised as aerobatic under FAA certification requirements, the aircraft must be capable of +6, -3 limit (not ultimate) loads....so it is.