Party youth wings are a vital pipeline to power, but have been overlooked by gender scholars. We investigate the political socialization that youth wings offer their women members, focusing on gendered trends as regards two key political attitudes. We ask: Do women and men in youth wings differ in their acquisition of personal efficacy and electoral ambition? Using YOUMEM survey data from over 3,100 youth wing members in Australia, Austria, Germany, Italy, Spain and Sweden, we find that women are more likely than men to report increased desire to influence party policy and stand as candidates - the latter especially in center-right youth wings. In addition, the more exposed members are to the youth wing, the larger the gender gaps in the acquisition of efficacy and ambition. Our results suggest that, insofar as women's political socialization is concerned, youth wings can be forces of renovation within their parties.