The Ford factory stuck to its own production of rear-wheel-drive models and left the four-wheel-drive models to others. Four-wheel-drive conversions with small front wheels were offered for Fords by Roadless and Selene (Manuel). County also got interested in competing with these and introduced the 4000-Four. This was followed by corresponding models of the 4600, 6600, 7600, 6700, and 7700. These were equipped with both Ford cabs and Hara flat-floor cabs. The County Four models had a differential lock from the start.

When the 10-series was introduced, County versions of the 6610 and 7610 were presented, but at this point Ford’s own, cheaper four-wheel-drive models had taken over the aftermarket's business. Ford’s four-wheel drive was also significantly more agile than County's. Additionally, County still used the old unsynchronized constant mesh gearbox. In the last E-models, County switched to cheaper Carraro front axles.

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