"岡本 裕生" jrr.jp (in Japanese). Retrieved 4 November 2025. is a Japanese motorcycle racer who competes in the Supersport World Championship for Yamaha Ten Kate Racing, having raced for the same team in 2025.
Okamoto is the 2024 All Japan Road Race JSB1000 champion, as well as the 2018 and 2020 ST600 champion.
Early life Okamoto was born in the city of Yashio, in Saitama, Japan. He began riding a pocket bike at the age of six,"ヤマハファクトリーライダー岡本裕生最強の挑戦者が、王者に挑む" hyod-products.com (in Japanese). Retrieved 28 November 2025. together with his brother, both influenced by their father. Okamoto was invited to join the Norifumi Abe-founded Team Norick around the age of 14, a racing school aimed at young Japanese riders, which Grand Prix motorcycle racers like Kohta Nozane have attended. In 2015, he participated in the ST600 Championship and won the Sugo and Tsukuba races."14歳の岡本裕生の決意" mr-bike.jp (in Japanese), 3 February 2025. Retrieved 28 November 2025.
Career All Japan Road Race Championship (2016–2024) J-GP2 In 2016, Okamoto entered the All Japan Road Race Championship J-GP2 class, aboard a Yamaha YZW-N6 prototype. In the opening round at Tsukuba, Okamoto crashed and suffered a broken femur in addition to a fractured ocular bone. Consequently, he missed the next three rounds of the championship and returned in the Motegi round."【Webikeチームノリックヤマハ】全日本ロードレース選手権シリーズ第6戦" news.webike.net (in Japanese), 26 August 2016. Retrieved 28 November 2025. He finished the season with a best-place finish of 17th, and 26th overall."【Webikeチームノリックヤマハ】全日本ロードレース選手権シリーズ第9戦" news.webike.net (in Japanese), 14 November 2016. Retrieved 28 November 2025.
ST600 In 2017, Okamoto stepped down to the ST600 class of the All Japan Road Race Championship with 51Garage Team Iwaki. He claimed his maiden win in the second round at Sportsland Sugo, with an advantage of over nine seconds in the rain."全日本RR第3戦SUGO決勝ST600" ridingsport.com (in Japanese), 14 May 2017. Retrieved 28 November 2025. He would also set his first ST600 pole position at Autopolis and closed off the season with a second career win at Suzuka."岡本裕生が初ポールポジション！" archive.mfj.or.jp (in Japanese), 25 June 2017. Retrieved 28 November 2025."【全日本ロードレース選手権ST600クラス第9戦】岡本裕生が今季2勝目/前田恵助がタイトル獲得!!" ms.bridgestone.co.jp (in Japanese), 5 November 2017. Retrieved 28 November 2025. Okamoto would face his second ST600 season in 2018, and won the second race of the calendar at Sugo again."岡本裕生がワンサイドレースを見せ今季1勝目！" archive.mfj.or.jp (in Japanese), 17 June 2018. Retrieved 28 November 2025. He claimed four more podiums across the season, including a second win at Tsukuba,"2018全日本ロードレース第5戦筑波 決勝レース2" racingheroes.jp (in Japanese), 2 July 2018. Retrieved 28 November 2025. and was crowned ST600 champion at the 50th MFJ Grand Prix at Suzuka, ahead of Tomoyoshi Koyama."2018年 全日本ロードレース選手権 ST600 岡本裕生選手が最終戦で大逆転、「YZF-R6」で初のチャンピオンを獲得" global.yamaha-motor.com (in Japanese), 5 November 2018. Retrieved 28 November 2025. Okamoto remained in the category for 2019 and won the opening round at Motegi, including a pole position and a fastest lap."岡本裕生が長尾健吾を抑えトップでゴール！" archive.mfj.or.jp (in Japanese), 7 April 2019. Retrieved 28 November 2025.. He would finish on the podium on three more occasions throughout the season, including a win at Tsukuba,"【全日本ロードレース第4戦筑波 ST600レース2】岡本裕生ポールtoウイン。レースタイムは昨年より20秒短縮!!" ms.bridgestone.co.jp (in Japanese), 23 June 2019. Retrieved 28 November 2025. but lost his title chances after a crash in the final round.
Okamoto faced his final ST600 season in 2020. He claimed victory in the opening round at Sugo,"【全日本ロードレース選手権 第1戦 SUGO ST600 】岡本裕生が一度もトップを譲らず完勝！" ms.bridgestone.co.jp (in Japanese), 11 August 2020. Retrieved 28 November 2025. followed by a second place at Autopolis and a second win of the season at Motegi."岡本裕生が小山知良の追撃を振り切り今季2勝目をマーク！" archive.mfj.or.jp (in Japanese), 18 October 2020. Retrieved 28 November 2025. Okamoto was crowned All Japan ST600 champion for a second time in the final round at Suzuka, following a fourth-place finish."2020年 全日本ロードレース選手権 ST600 岡本裕生選手が自身2度目となるST600でのチャンピオンを獲得" global.yamaha-motor.com (in Japanese), 2 November 2020. Retrieved 28 November 2025.
ST1000 In 2021, Yamaha promoted Okamoto to the ST1000 class after four full seasons in ST600, including two championships."ST1000クラスにスイッチする岡本裕生「初戦から、しっかり魅せたい！」/全日本ロード" as-web.jp (in Japanese), 2 March 2021. Retrieved 28 November 2025. Okamoto finished third in his debut race in the season opener at Motegi and claimed his maiden pole position in wet conditions at Tsukuba."全日本RR第4戦筑波【ST1000予選】岡本裕生がST1000で初ポールポジション" ridingsport.com (in Japanese), 19 June 2021. Retrieved 28 November 2025. He would finish on the podium in three more occasions and ended the season with his first class win at Autopolis."岡本裕生「結果を残すことができ、今までで一番うれしい優勝」/全日本ロード第7戦オートポリス ST1000 決勝会見" as-web.jp (in Japanese), 19 September 2021. Retrieved 28 November 2025."全日本RR第7戦オートポリス【ST1000決勝】岡本裕生がドッグファイトを制す、チャンピオンは渡辺一馬" ridingsport.com (in Japanese), 19 September 2021. Retrieved 28 November 2025.
JSB1000 On 8 February 2022, Yamaha announced Okamoto would be stepping up to the JSB1000 class with the Yamaha Factory Racing Team, with Katsuyuki Nakasuga as teammate."ヤマハ、岡本裕生をJSB1000に昇格" chunichi.co.jp (in Japanese), 8 February 2022. Retrieved 28 November 2025. Okamoto finished in second place in Race 2 of the opening round and would secure podium finishes in the next six races behind teammate Nakasuga."全日本RR第1戦もてぎ【JSB1000レース2】ヤマハ中須賀克行と岡本裕生がワンツー!!" ridingsport.com 3 April 2022. Retrieved 28 November 2025."【2022年全日本ロードレース選手権 第4戦 SUGO JSB1000 レース2】中須賀克行が岡本裕生の猛攻撃を退けて開幕8連勝" ms.bridgestone.co.jp (in Japanese), 5 June 2022. Retrieved 28 November 2025. During the Autopolis round's qualifying practice, Okamoto fell and injured his leg, which made him sit out the following two races."全日本RR第6戦オートポリス【JSB1000】岡本裕生がオートポリスラウンドを欠場" ridingsport.com (in Japanese), 28 August 2022. Retrieved 28 November 2025. He finished his rookie season in third place behind riders' champion Nakasuga and Kazuki Watanabe.
In 2023, Okamoto closed the gap with his teammate Nakasuga, coming second in every race he finished except for Sugo Race 1, where he clinched his maiden JSB1000 win."全日本RR第3戦SUGO【JSB1000レース1】岡本裕生、中須賀克行を下して初優勝!!" ridingsport.com (in Japanese), 20 May 2023. Retrieved 28 November 2025. In the final lap of the last round at Suzuka, Okamoto was leading the race into the final chicane when Nakasuga made contact with him, collecting both in the process. Both failed to cross the finish line, with his teammate being disqualified for the action."ヤマハ同士の接触転倒に中須賀「台無しにしてしまった。岡本選手の勝利をふいにしてしまい申し訳ない」/全日本ロード第8戦鈴鹿" as-web.jp (in Japanese), 15 October 2023. Retrieved 28 November 2025. Okamoto ended the season as championship runner-up, 37 points behind his teammate, who took the crown for another year.
Okamoto faced his third full season in the JSB1000 class in 2024. He stayed on the podium in every race of the calendar, winning for the first time in the third round at Sugo, followed by three consecutive victories at the Autopolis and Okayama rounds."【2024年全日本ロードレース選手権 第7戦 岡山 JSB1000】岡本裕生がポールto独走ウインで3連勝" ms.bridgestone.co.jp (in Japanese), 29 September 2024. Retrieved 28 November 2025. Coming into Race 2 of the final round at Suzuka, he and Nakasuga were tied on points."【JSB1000クラス】2024年全日本ロードレース選手権を振り返る「同ポイントの最終戦は新チャンピオン誕生で決着!!」" mc-web.jp (in Japanese), 5 November 2024. Retrieved 28 November 2025. Okamoto was leading the race when the Safety Car was deployed, bunching up the field and bringing Nakasuga back into contention. After the Safety Car had been called in, Okamoto was passed by Ryo Mizuno and Nakasuga on the main straight, but the latter had trouble trying to stop the bike into Turn 1 and fell. Okamoto crossed the line in third place behind Mizuno and Nozane, and was crowned JSB1000 champion."中須賀まさかの転倒で岡本裕生が初戴冠。レースは水野が2連勝で制す/2024全日本ロード第8戦鈴鹿 JSB1000レース2" as-web.jp (in Japanese), 27 October 2024. Retrieved 28 November 2025."全日本ロードレース選手権" race.yamaha-motor.co.jp (in Japanese), 27 October 2024. Retrieved 28 November 2025.
Supersport World Championship (2025–) Yamaha Ten Kate Racing On 6 November 2024, Yamaha announced Okamoto would be moving to the 2025 Supersport World Championship with Ten Kate Racing."全日本ロードレース選手権JSB1000チャンピオンの岡本裕生選手 2025年からスーパースポーツ世界選手権に「YZF-R9」で挑戦" global.yamaha-motor.com (in Japanese), 6 November 2024. Retrieved 28 November 2025."岡本裕生、2025年からWSSPにヤマハYZF-R9で参戦決定。全日本ロードJSB1000ではチャンピオン獲得" as-web.jp (in Japanese), 6 November 2024. Retrieved 28 November 2025. Ahead of his debut in the category, Okamoto stated that the biggest challenges he expected to face were the track adaptation and Pirelli tyre life, as well as the jump from the JSB Yamaha YZF-R1 to the Supersport YZF-R9."【2025 SSP参戦岡本裕生インタビュー】ヤマハ YZF-R9&ピレリタイヤの印象と参戦への展望" ridersclub-web.jp (in Japanese), 22 March 2025. Retrieved 28 November 2025.
During Day 1 of the pre-season tests held at Phillip Island, Okamoto crashed and suffered a fractured tailbone and a dislocation, which made him sit out the rest of the tests, as well as the season opener at the same track."テスト初日に骨折。ヤマハのジョナサン・レイ、岡本裕生が第1戦オーストラリアを欠場/SBK" as-web.jp (in Japanese), 17 February 2025. Retrieved 29 November 2025. His rookie season in the World Championship was underwhelming, only scoring points in Cremona Race 2. During the Qualifying Practice of the Donington Park round, Okamoto was involved in a serious accident after a collision with another rider, and was diagnosed with a concussion, chest injury and collarbone injury. He missed the following two rounds as a result, and concluded the season in 30th place in the championship standings.
On 25 November 2025, Yamaha announced Okamoto's renewal for a second season with Ten Kate Racing for the 2026 Supersport World Championship."岡本裕生選手がYZF-R9とスーパースポーツ世界選手権2年目のシーズンに挑む" global.yamaha-motor.com (in Japanese), 25 November 2025. Retrieved 29 November 2025.
Career statistics All Japan Road Race Championship Races by year
(key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Class Bike 1 2 3 4 5 6 7 8 9 10 11 12 13 Pos Pts 2016 J-GP2 Yamaha TSU1 TSU2 MOT AUT SUG MOT OKA SUZ 26th 9.7 2017 ST600 Yamaha TSU SUG MOT AUT OKA SUZ 3rd 120 2018 ST600 Yamaha MOT SUG TSU1 TSU2 AUT OKA SUZ 1st 145 2019 ST600 Yamaha MOT SUG TSU1 TSU2 OKA AUT SUZ 3rd 126 2020 ST600 Yamaha SUG OKA AUT MOT SUZ 1st 93 2021 ST1000 Yamaha MOT SUG TSU1 TSU2 SUZ OKA AUT 5th 77 2022 JSB1000 Yamaha MOT1 MOT2 SUZ1 SUZ2 AUT1 AUT2 SUG1 SUG2 AUT OKA SUZ1 SUZ2 SUZ3 3rd 173 2023 JSB1000 Yamaha MOT1 MOT2 SUZ1 SUZ2 SUG1 SUG2 MOT AUT1 AUT2 OKA SUZ1 SUZ2 2nd 208 2024 JSB1000 Yamaha SUZ MOT1 MOT2 SUG1 SUG2 MOT AUT1 AUT2 OKA SUZ1 SUZ2 1st 230 – Rider did not finish the race, but was classified as he completed more than ~75% of the race distance. – Half points were awarded based on the qualifying results at the 2018 Okayama round, due to the approach of Typhoon Trami.
Supersport World Championship By season
Season Motorcycle Team Race Win Podium Pole FLap Pts Plcd Yamaha YZF-R9 Yamaha Ten Kate Racing 18 0 0 0 0 2 30th Yamaha YZF-R9 Yamaha Ten Kate Racing 18 0 0 0 0 6* 24th* Total 36 0 0 0 0 8
Races by year
(key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Bike 1 2 3 4 5 6 7 8 9 10 11 12 Pos Pts R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 Yamaha AUS AUS POR POR NED NED ITA ITA CZE CZE EMI EMI GBR GBR HUN HUN FRA FRA ARA ARA POR POR SPA SPA 30th 2 Yamaha AUS AUS POR POR NED NED HUN HUN CZE CZE ARA ARA EMI EMI GBR GBR FRA FRA ITA ITA POR POR SPA SPA 24th* 6*
Season still in progress.
References