When Loris Capirossi lines up for his final grand prix at Valencia on Sunday, he will do so bearing the number 58 of Marco Simoncelli.

Capirossi, who usually races with the #65, will run Simoncelli's number as a tribute to his fellow Italian, who died at the previous Malaysian MotoGP.

"The situation is strange for everyone. We are all here and we try never to forget Marco - this is really important because he is part of our life and always tried to do his best," said Capirossi.

"For this I want to keep his honour and I want to use his number 58 on my bike for this race. I really hope he is happy about that and that I can achieve the same result as he could.

"I will do my best for him and after this race I will of course retire as planned. I am happy because after 22 seasons it's a good time to stop. There are a lot of strong riders and it's good to do something else."

38-year-old Capirossi, who rides for Pramac Ducati, has been a motorcycle grand prix rider since 1990.

"Like all stories start, they all finish and mine is finished. After this race I have my family and something good I think I can do with my life."

Sunday's race could also be the last time the #58 is seen in the premier-class. The number looks set to be retired in memory of former 250cc world champion Simoncelli.