Katsuyuki Nakasuga (Japanese: 中須賀 克行, Hepburn: Nakasuga Katsuyuki; born 9 August 1981 in Fukuoka Prefecture) is a…Katsuyuki Nakasuga (Japanese: 中須賀 克行, Hepburn: Nakasuga Katsuyuki; born 9 August 1981 in Fukuoka Prefecture) is a Japanese motorcycle racer. He races a factory Yamaha YZF-R1 in the JSB1000 class of the All Japan Road Race Championship. He has won the Suzuka 8 Hours four times (2015, 2016, 2017 and 2018) and the JSB1000 championship title thirteen times (2008, 2009, 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2021, 2022, 2023 and 2025).
Kousuke Akiyoshi (秋吉耕佑, Akiyoshi Kōsuke; born January 12, 1975) is a Japanese motorcycle road racer. He is a two-time…Kousuke Akiyoshi (秋吉耕佑, Akiyoshi Kōsuke; born January 12, 1975) is a Japanese motorcycle road racer. He is a two-time champion in the All-Japan Superbike Championship, and has competed sporadically in the MotoGP World Championship. Akiyoshi is known in his native Japan as a competitor in the MFJ All Japan Road Race GP250 Championship, and most notably the All Japan Superbike championship, where he has enjoyed success with the Yoshimura Suzuki team riding a Suzuki GSX-R1000. In July 2007 he, along with Yukio Kagayama, won the Suzuka 8 Hours endurance race on a Yoshimura Suzuki bike.