KZ2 is a kart racing class using 125 cc water-cooled two-stroke engines yielding about 52 hp (39 kW). The engines are equipped with a 6-speed gearbox. Z2 is the second fastest of the KZ karting racing categories, and technical regulations are similar to faster KZ1 except that in KZ2 the gearbox must be "hand-operated and exclusively mechanical without a servo system", as well as the use of medium tires.^[1] Both the engine and chassis must be approved by the CIK-FIA racing governing commission. The class is open to drivers aged 15 years and up with the minimum weight being 175 kg, this includes the kart and driver.

The KZ2 class used to be called Intercontinental C (ICC) and was renamed by the CIK-FIA in January 2007.

The KZ2 class is run in both national and continental championships and is popular in Europe and the USA. In the UK, since the beginning of 2019, The Motorsport UK run championship is the only British Championship and runs to CIK regulations with Le Cont tyres. The NKF Super 4 series continues as KZ UK with a minimum weight of 180 kg but has no championship status.

Year	Champion	Chassis / Engine / Tire	Class
2013	Dorian Boccolacci	Energy Corse / TM / Bridgestone	KZ2 Supercup
2014	Ryan Van Der Burgt	DR / Modena / Bridgestone	KZ2 Supercup
2015	Thomas Laurent	Tony Kart / Vortex / LeCont	KZ2 Supercup
2016	Pedro Hiltbrand	CRG / Maxter / Vega	KZ2 Supercup
2017	Alex Irlando	Sodikart / TM / Bridgestone	KZ2 Supercup
2018	Matteo Viganò	Tony Kart / Vortex / Bridgestone	KZ2 Supercup
2019	Emilien Denner	Sodikart / TM / Bridgestone	KZ2 Supercup
2020	Simone Cunati	Birel / TM / Vega	KZ2 Supercup
2021	Lorenzo Travisanutto	Parolin / TM / MG	KZ2 Supercup
2022	Arthur Carbonnel	CRG / TM / LeCont	KZ2 Supercup

Year	European Champion	Chassis / Engine / Tire	Class
2007	Thomas Knopper	PCR / TM / Dunlop	KZ2
2008	Tony Lavanant	Energy Corse / TM / Bridgestone	KZ2
2009	Angelo Lombardo	Tony Kart / Vortex / Bridgestone	KZ2
2010	Paolo De Conto	Energy Corse / TM / Vega	KZ2
2011	Fabian Federer	CRG / TM / Bridgestone	KZ2
2012	Simas Juodvirsis	Energy Corse / TM / Vega	KZ2
2013	Emil Antonsen	DR / TM / Bridgestone	KZ2
2014	Andrea Dalè	CRG / Maxter / Bridgestone	KZ2
2015	Joel Johansson	Energy Corse / TM / LeCont	KZ2
2016	Fabian Federer	CRG / TM / Bridgestone	KZ2
2017	Leon Köhler	Tony Kart / Vortex / Vega	KZ2
2018	Adrien Renaudin	Sodikart / TM / LeCont	KZ2
2019	Emil Skärås	Energy Corse / TM / Bridgestone	KZ2
2020	Victor Gustavsson	Birel / TM / Vega	KZ2
2021	Giacomo Pollini	CRG / TM / MG	KZ2
2022	Tom Leuillet	Birel / TM / LeCont	KZ2

^[2]

• KF1, the top level of karting
• KF2, a KF1 feeder series
• KF3, a KF2 and KF1 feeder series
• KZ1, the fastest KZ karting racing category
• Superkart, road racing with kart sized open-wheel cars

• CIK-FIA website