SHE-DEVILS ON WHEELS (1968)
An all-female motorcycle gang ("The Maneaters") hold motorcycle races while terrorising the residents of a Florida town, clashing against an all-male rival gang of hot-riders...
THE LAST HOUSE ON THE LEFT (1972)
Two teenage girls head to a rock concert for one's birthday, but while trying to score marijuana in the city, they're kidnapped and brutalised by a gang of psychotic convicts.