Originally Posted by Roelof

Engines like RB, MAX, Mega-MF, Capricorn, Murnan, JP and Gimar are all Novarossi
Mega, IDM, some of JL, some of Trinity and I think the new Motonica engine is made by Picco

Cars from caster racing are sold under several brandnames as also Nitrotek, Acme, some models of Carson and Smartech are made by the same company.

But mostly the big names have their own productions.