CT Timania
Parts >> Seat Post

The inline post combines a 3Al-2.5V shaft with a 6Al-4V head and carbon
fibre lower saddle rail cradle, giving claimed weights of 190g
(27.2x350mm) to 239g (31.6x400mm). It's available in 31.6mm
diameters, and 350 and 400mm lengths. Pricing for the new TiMania bits
has yet to be confirmed.