4 000 SEK
(About € 378.79)
The crank assy was in a box with many KX 250 74-76 spare parts but there are 2 different part numbers on the crank assy for the KX 250 74-79 and I don't know which one it is or what the difference is.
One has part number 13031-1004 and the other has part number 13031-1020.
13031-1004
Crank & Conrod Assy
Original part
Kawasaki KX 250 1974-1976, 1978-1979