OK-Junior

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OK-Junior is a kart racing class for top drivers aged 11 to 15 (drivers must reach the age of 12 within the first semester of calendar year).

This class used to be called Junior Intercontinental A (JICA or ICA-J) and has changed since January 2007 when CIK-FIA decided to replace the 100 cc air-cooled two-stroke engines with 125 cc Touch-and-Go (TaG) water-cooled two-stroke engines (KF type).The engines produce 26–27 hp (19–20 kW). The chassis and engines must be approved by the CIK-FIA. Minimum weight is 145 kg, including kart and driver.

Karts are equipped with an electric starter and clutch. The engine rpm is limited to 14,000 rpm.

It is one of the highest kart classes with national championships (perhaps with different tyre rules).

There is a European championship, a World Cup, as well as Oceania and Asia-Pacific championships. The Junior Monaco Kart Cup is taking place each year in this format.

For 2013 the class was renamed KF-Junior.

In 2016, the karts were completely re-designed by removing much of the electronics. The karts are now push started. The class was subsequently renamed OK-Junior, standing for Original Kart.

Year	World Cup Winner [1]	Chassis / Engine / Tires
2009	Giuliano Niceta	Tony Kart / Vortex / Vega
2010	Alexander Albon	Intrepid / TM / Dunlop
2011	Charles Leclerc	Intrepid / TM / Vega
2012	Luca Corberi	Kosmic / Vortex / Vega

Year	World Championship Winner [1]	Chassis / Engine / Tires
2013	Alessio Lorandi	Tony Kart / Parilla / LeCont
2014	Enaam Ahmed	FA Kart / Vortex / Vega
2015	Logan Sargeant	FA Kart / Vortex / LeCont
2016	Victor Martins	Kosmic / Parilla / Vega
2017	Dexter Patterson	Exprit / TM / LeCont
2018	Victor Bernier	Kosmic / Parilla / Vega
2019	Thomas ten Brinke	FA Kart / Vortex / LeCont
2020	Freddie Slater	Kosmic / Vortex / LeCont
2021	Kean Nakamura-Berta	Exprit / TM / MG
2022	Enzo Tarnvanichkul	Tony Kart / Vortex / Vega
2023	Dries van Langendonck	Exprit / TM / Vega

Year	European Champion [1]	Chassis / Engine / Tires
1999	Reinhard Kofler [2]	Tony Kart / Vortex
2000	Michael Ammermüller	Tony Kart / Vortex
2001	Sebastian Vettel	Tony Kart / Vortex / Vega
2002	Sébastien Buemi	CRG / Maxter / Vega
2003	Nicholas Risitano	Birel / TM / Vega
2004	Stefano Coletti	Birel / Parilla / Vega
2005	Michael Christensen	Gillard / Parilla / Bridgestone
2006	Miquel Monrás	Maranello / Parilla / Vega
2007	Jack Harvey	Maranello / XTR / Dunlop
2008	Aaro Vainio	Maranello / Maxter / Dunlop
2009	Nyck de Vries	Zanardi / Parilla / Vega
2010	Alexander Albon	Intrepid / TM / Dunlop
2011	George Russell	Intrepid / TM / Vega
2012	George Russell	Tony Kart / Vortex / Vega
2013	Lando Norris	FA Kart / Vortex / LeCont
2014	Enaam Ahmed	FA Kart / Vortex / Vega
2015	Christian Lundgaard	Tony Kart / Vortex/ LeCont
2016	Fin Kenneally	FA Kart / Vortex / Vega
2017	Jonny Edgar	Exprit / TM / LeCont
2018	Paul Aron	FA Kart / Vortex / Vega
2019	Marcus Amand	Kosmic / Parilla / LeCont
2020	Ugo Ugochukwu	Kart Republic / Parilla / LeCont
2021	Freddie Slater	Kosmic / Vortex / MG
2022	Anatoly Khavalkin	Parolin / TM / Vega
2023	Oleksandr Bondarev	Kart Republic / IAME / Vega

• KF1, the top level of karting
• KF2, another KF1 feeder series besides KF3
• KZ1, the fastest KZ karting racing category
• KZ2, the second fastest KZ karting racing category
• Superkart, road racing with kart sized open-wheel cars
• Karting World Championship
• Karting European Championship

• CIK-FIA – International Karting Governing Body