Honda CB250 K4 Cylinder Head Ported
Honda CB250 K4 Cylinder Head. Both inlet and exhaust have been ported. Inlets opened up to about 32mm. About 1.55mm taken off. Combustion chamber looks good. Exhaust guides are bronze, but look like someone has mullered the top. One plug has a helicoil. The other looks suspect, but threads are there. This will also fit the 350k4, but you might need to scallop around the combustion chamber. Although in a sorry state, there are no broken fins and all fins are quite straight. So worth saving for that.
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