- Birel, Italy, chassis
- Briggs & Stratton, USA, engines
- CRG, Italy, chassis and engines
- Gillard, Great Britain, chassis
- Gold Kart, Italy, chassis
- IAME, Italy, engines
- Komet, Italy, engines
- Kosmic, Italy, chassis (offshoot of Tony Kart)
- Margay, USA, chassis, Website (http://www.margay.com/)
- Parilla, Italy, engines
- TM , Italy, engines (also motocross engines)
- Tony Kart, Italy, chassis and engines
- Topkart, Italy, chassis and engines
- Yamaha, Japan, engines Kart Engine Website (http://www.yamaha-motor.com/products/rkt/karthome.html)
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