If I'm not wrong,they said:
"Fiery Adventurer! BoukenRed!"
"Atsui ki Boukensha! BoukenRed!"
"Fast Adventurer! BoukenBlack!"
"Hayai ki Boukensha! BoukenBlack!"
"High Adventurer! BoukenBlue!"
"Takai ki Boukensha! BoukenBlue!"
"Strong Adventurer! BoukenYellow!"
Tsuyoi ki Boukensha! BoukenYellow!"
"Deep Adventurer! BoukenPink!"
"Fukai ki Boukensha! BoukenPink!"
"Dazzling Adventurer! BoukenSilver!"
"Mabayui ki Boukensha! BoukenSilver!"
"Endless adventure spirits! Rumbling Squadron Boukenger!"
"Hatenaki Bouken Spirit! GoGo Sentai Boukenger!"
