Diakron

Released in 1983, Diakron: Robot/Cars Of The Future was a small toyline sold directly by Takara in the United States. It is notable for essentially being a direct port of Takara's Diaclone toyline, and featured several toys that would, mere months later, be released as  Transformers by Hasbro.

Following the establishment of Takara's partnership with Hasbro, Diakron ceased production. It was functionally replaced by Kronoform, an American toyline from Takara which featured Diaclone and Microman toys which were not released as Transformers.

Interestingly, it appears the term Powerdasher was directly borrowed from Diakron, as their Diaclone equivalents were simply called "Dashers".

Story
The Diakron story, as related by a catalog:

''Welcome to the futuristic world of the Diakron, where Diakron commanders go on secret missions to protect their civilization against enemies. To disguise their movements, the Diakron commanders ride in special vehicles that magically change shape and transform into robot warriors, space ships, lunar landers and more!''

Toyline
The Diakron toyline included:

Robot/Cars
 * DK-1 (red Sunstreaker)
 * DK-2 (black Ironhide)
 * DK-3 (blue Trailbreaker)

Powerdashers
 * Aragon (Powerdasher car)
 * Zetar (Powerdasher drill)
 * Cromar (Powerdasher jet)

Multi-Force 14 Robot