 Dunlop Sport (Australia) then purchased ownership rights to the KT26 design (with a 10-year royalty agreement with Stubberfield).The KT-26 was then redeveloped to become the Dunlop KT26 which was in continuous production from 1978 to 2012 (with minor pattern changes to the upper & revised sole lug pattern with added forefoot section).The KT26 remained unchanged for decades while competitor brands changed their designs, materials and constructions and used built-in obsolescence and short product life cycle marketing.