S20 wheel

There have been two versions of the S20. From 1977 to 1979 there was a special export version of the S10, which could be disassembled so that it could be sent as a flat package. After that, the S10 was modified so that this special version was no longer necessary. In 1980 and 1981, the S20 was the same as the S10, but then unpainted and therefore cheaper. This was then followed by the S15.