So what Happened to the CIK Four Strokes?

Here are some of the proceeding of CIK from ealier this decade when the new formula for International racing was deliberated and decided:

Communications of the CIK FIA from Meeting of Dec 2001 (Decision to Introduce Long Life 4 stroke Formula:

Communications of CIK FIA Mar, 2002 (Phased Introduction of new formula)

Communication of CIK FIA Jun 2002 (Proposal by the Manufacturers)

Latest Decision of CIK FIA Dec 2003 (Per Karting.co.uk)
...

So what killed the 4 stroke formula?

/FFJ