Carl Fogarty's World Superbike team are looking for a new backer after announcing that title sponsor Petronas will quit at the end of this season.
Fogarty is searching for a new sponsor for the 2007 season
The four-time world champion's team was founded with backing from the Malaysian oil giant in 2003.
But they have struggled to compete with Ducati and Honda, and have managed just two podium positions in three years.
Fogarty said he wanted his Burton-based team to continue racing and had begun searching for a new sponsor.
Fogarty said: "We always knew that building a brand new motorcycle and to compete against the might of the more established motorcycle manufacturers would not be easy.
"Nevertheless, we are proud of all our accomplishments and to have been able to overcome all the obstacles we faced, to come this far, is an achievement."
The World Superbike Championship begins this weekend in Qatar.