Since kart manufacturers like creating alternate brands to get a different color scheme and some minor geometry changes out in the market, there’s some confusion as to where to get parts. During my kart search this winter, I did a bunch of website searches, looked up stated locations on Google Maps to find if the “manufacturer”'s address was a factory or just an office, and checked the FIA Karting homologation documents.
SodiKart (France) - Sodi, Alpha
OTK Kart Group - TonyKart, EOS, Kosmic Kart, Redspeed, Gillard, Exprit. Recently left: FA Kart
BirelART - Birel, Ricciardo, Charles Leclerc, Kubica, CompKart, Swiss Hutless
Tinini Group - CRG, GP, DR Kart, LH Kart, Evokart. Recently discontinued: Zanardi
IPK - Praga, Formula K, OK1, RS Kart, ItalKart. Note: IPK is the only manufacturer that lists their chassis’ weight on their site! Everyone else just says they’re the lightest.
Parolin - Parolin, Merlin, Vemme, Energy, TopKart
Breda - Kart Republic, Alonso, Will Power
Emme Racing SAS - Mad Croc, Race Factory, Drago, Magik Kart , AK USA
Righetti Ridolfi - Mac Minarelli, AllKart, Extreme, Gold
TBKart - TBKart, GFC, Trackmagic, Jacques Villeneuve
Drew Price Engineering (Australia)- Arrow, Sera, Monaco. Recently discontinued: Deadly
Independents include Margay (in St. Louis, Missouri, USA), Factory Kart (in Riverside, California, USA) Haase, Mach 1 (DE), Wright (UK), AirKart (UK), and Tecno.
Intrepid karts just magically appear from somewhere. I would not be surprised if Rodney Berryhill is making them in an Italian-sounding town in Oklahoma.
2022 update: Swiss Hutless karts are now made by Birel, and Gillards are now made by OTK. Given that Dartford Karting has bought Gillard’s old equipment I’ll probably soon be listing Solo as an independent brand again soon!