Kammala wannan jumla: Don kakar 1968 an samar da ƙayyadaddun "B" T86 don haɗawa da BRM V12 wanda ya maye gurbin na'urar Maserati mai tsufa kuma ya fara zama a tseren na biyu na kakar a Spain. An gina motoci biyu da farko, na uku ana gina shi bayan hadarin Redman a Spa, kuma waɗannan ƙungiyar Cooper ta yi amfani da su ne kawai a lokacin gasar 1968 Formula One. Tsarin Cooper na BRM V12 ya kasance mafi ƙarancin ƙarfin "motar wasanni" na injin, wanda ya riga ya kasance ɗayan mafi nauyi a kan grid, amma bayan kammala na uku da na huɗu (godiya ga rashin amincin wasu) a duka
Spain da Monaco motar ta sannu a hankali ta sauka a cikin grid zuwa ƙarshen kakar. Grand Prix na Mexico zai zama tseren Formula One na ƙarshe don motar Cooper, kamar yadda ƙungiyar Cooper ta yanke shawarar ba za ta iya ci gaba da yin gasa a cikin Formula One ba tare da samun kuɗin tallafi ba don 1969 kuma ta sayar da sassan T86B guda biyu da ke hannunta. Na farko T86B da aka samu ta Martin Brain wanda ya fitar da mota tare da wasu nasara a Birtaniya hillclimb da kulob din tseren, amma a cikin wani Formula Libre tseren a Silverstone a 1970 Brain bar hanya da kuma flipped da mota, kuma aka kashe.