There's no shifter or control cable for the "two speed hub".
none needed if only 1 cog on the hub.. 1&2 'speed' .. same hub.
2 speed kickback comes from a different source, and custom build up.
Anyone know if that's some special zero compression housing,or did he make it himself?
that is a bead and tube housing of aluminum, that is very low compression. [nokon 1 possible brand]