The continuing worldwide decline in sports bike sales has forced the Superbike Commission to reduce the minimum number of motorcycles to be produced for homolgation, to be allowed to take part in the World Superbike series. As of now, manufacturers wishing to race a particular motorcycle must have sold 250 bikes by the end of their first year of racing in WSBK, and 1000 bikes by the end of the second year, half the requirements previously on the books. But manufacturers will still have to have produced 125 bikes before they can even embark on the homologation procedure.
The sales numbers have been reduced in response to the continuing decline in sales of large and middleweight sports bikes around the world, under pressure from increasing speed restrictions and monitoring on public roads. Even Honda is reportedly having problems selling the required numbers of the CBR1000RR SP, despite the popularity of the bike. The declining sports bike market is rumored to have persuaded Honda to shelve its V4 sports bike, which has already been postponed once. Smaller manufacturers have faced similar problems, with Aprilia struggling to sell the RSV4, despite the bike having won two world championships and consistently been a championship contender.