For 2005, a change in regulations for the 24 Hours of Le Mans and Le Mans Endurance Series would make the B2K/40 obsolete, while at the same time the new B05/40 was being launched as its replacement. In the American Le Mans Series, the B2K/40 would still be allowed. Van der Steur Racing would be the only consistent competitor, with BAT Competition appearing for a few select races and Intersport running their car for one last time at the 12 Hours of Sebring before upgrading to a B05/40. The team would finish a distant fourth in the LMP2 championship. Van der Steur, strapped for cash, would continue with their B2K/40 into 2006 at select races before finally upgrading to a Radical SR9.