Photograph provided by Bob Malowney of the National YoYo Museum

World's Largest YoYo - Big Yo
Chico, California, USA

Bob Malowney, director of the National YoYo Museum (right) and designer/builder Tom Kuhn pose with "Big Yo," a 256-pound exact scale replica of a Tom Kuhn "No Jive 3 in 1 YoYo." Fifty inches tall and 31.5 inches wide, the yoyo is made of California sugar pine, baltic birch from the former USSR, and hardrock maple. It was test launched in San Francisco on October 13, 1979, and now resides in the National YoYo Museum in Chico. Yes, it works!

Another "Big Yo" site.