Bosch and other OEM suppliers to the Porsche factory have a limited ability to continue making parts for older models indefinitely as often they see dwindling sales volumes of some products and have to abandon future production of some slower moving products.
Following the lead of Porsche who introduced the Porsche Classic line of parts in recent years, BKlassic was born out of an interest in not letting classic Porsche owners struggling to find specific parts for their car.
The same high standards of manufacture still remain, in fact with many parts it has been possible to improve them further than when the main business was still producing them. A good example of this is with fuel pressure regulators, of which the BKlassic versions now benefit from improved ethanol resistance.
More parts will be added to the BKlassic line as time goes on.