Sengoku Driver

"Lock On!"

- Activation announcement

The Sengoku Driver is the transformation belt for Kamen Riders Gaim (who found it by accident), Baron, Ryugen, Zangetsu, and Griton.

To transform, the user opens the lock on the lockseed. '(Lockseed: (lockseeds name) arms!) The user then inserts the lockseed into the Driver, closes the lock, (Lockseed: Lock. On!') and then press the knife down, in which it cuts opens the seed itself. A giant mechanical piece of fruit representing the lockseed the user used will appear and fall on the user's head. Inside, the fruit forms the helmet. The fruit forms the suit. Then the fruit disasembles and forms the armor.

Even though all the Riders use a Sengoku Driver, they each have a unique faceplate on the wearer's left hand side and have different voices.

Portrayal
The voice of the Sengoku Driver and Lockseeds is provided by Hōchū Ōtsuka (大塚 芳忠), who is also the narrator of Gaim as well as previously voicing the Imagin Deneb in Kamen Rider Den-O.