Studies, projects and construction of gearboxes, with or without limited slip differential, for every type of vehicle with 2 or 4 wheel drive.

Studies, projects, and construction of standard differentials, or limited slip differentials patent by "Colotti Trasmissioni". See voice Patents.
Calculations and construction of homologated gears for competitions, for vehicles with 2 or 4 wheel drive.

Gearboxes construction or parts of them, and every other mechanical detail for oldtimer.