Kiyonari has already achieved three titles with the Louth-based team, winning the coveted crown in 2006, 2007 and 2010, and scored more wins than anyone else in the championship.
Kiyonari added an Asia Road Racing Championship title to his achievements this year, and returns to the UK determined to maintain his position as the most successful rider in BSB history.
“I am very, very happy to be back because I have missed BSB so much. I want to be better than before,” Kiyonari said.
“I miss the championship: the races, the fans, the team – all of it - and that is why I have returned. I know that next season is very important for me and I need to get results and wins because I don’t want it to be like last time (in 2011).
“I want to be challenging again like when I won the title before. I have to give more than 100 per cent and I want a fourth title to show that I can do it again. I want to show what I can still do; I want to win more titles. My aim is for more wins and be champion again.”
Lincoln’s Lowes, meanwhile, joins the Samsung Honda team following a breakthrough 2012 campaign, which saw him celebrate his first race win after making the cut for the title showdown.
Lowes’s distinguished displays over the final three rounds saw him leap ahead of his title rivals and end the season as the highest-placed Honda rider in the overall standings in fourth.
“It is obviously a great opportunity for me to join Samsung Honda and I am ready to give it everything,” Lowes said. “I had a great season on the Honda last year and I think my style suits the Fireblade and I feel comfortable pushing it.
“The team have a lot of experience and we want to win the championship; they are a strong team and I think we are in a really good position to try and win that back. This is my best chance now that I have had a couple of seasons in BSB, now I just need to come out and be consistent from the start.
“I want to pick up where I left off last year and then we should be in a position ready for the end of the season and the showdown. I want to be winning more races next year as I definitely think I am in a position now to be going for the title.”