Break the Super Saiyan Barrier! Into the Hyperbolic Time Chamber!

is the seventy-second episode of Dragon Ball Z Kai. This episode first aired in Japan on September 12, 2010. Its original American airdate was July 13, 2011.
==Summary==
Goku uses Instant Transmission to take Gohan, Vegeta, and Future Trunks with him to the Hyperbolic Time Chamber. The room only has a capacity of two so Goku allows Vegeta and Trunks to go in first. Goku explains a years worth of training in that room is actually only one day in the outside world. When Trunks and Vegeta step inside the room, all they see is a vast amount of nothingness.
While this is going on, the Androids arrive at Kame House and ask for Goku's whereabouts. Piccolo refuses to tell them which results in a fight between Piccolo and Android 17. Piccolo overpowers Android 17 and tries to finish him off but Android 17 manages to dodge the attack. Back at the Hyperbolic Time Chamber, Vegeta and Trunks are due to be coming out of the room any second now which will reveal if it is possible to go beyond a Super Saiyan.
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