The Turbo RPS 4000 was introduced in 1979 and replaced RPS 4000. It was indeed Turbo'ed, in as much as the slam button on the top of the controller gave more welly when pressed. How driveable this was goodness knows...
Whether this went faster than the RPS 4000 remains open to debate, and I am not entirely convinced yet that this set was launched anywhere - opinions and proof welcome...
Set details as RPS 4000
Typical selling price: Unknown.
