Transport system for transporting products, in particular products to be assembled, comprising: - a stationary sliding track extending along a continuous sliding path free of interruptions; - a mobile unit which can be moved on said sliding track in a direction of advance; - motor means configured so as to move said mobile unit on said sliding track; - a first rolling guide which extends along said sliding path, disposed in the proximity of said sliding track and having at least one first rectilinear portion and at least one first curved portion; wherein said mobile unit comprises at least a first rolling unit configured to cooperate with said first rolling guide, said transport system being characterized in that: said first rolling guide has a first transition zone interposed between the first rectilinear portion and the first curved portion and comprises a first and a second cam (20, 21) having respectively a first and a second rolling surface (20a, 21a), and said first rolling unit comprises a first and a second rolling element (24, 25) configured to roll respectively over said first and second rolling surface (20a, 21a), around respective first and second rolling axes (X1, X2), not coinciding with each other and distanced in said direction of advance, said first and second rolling surfaces (20a, 21a) having a respective first and second width (L1, L2) constant along said sliding path and being disposed at a respective first and second rolling height (H1, H2) with respect to said sliding track, wherein the difference, in absolute value, between the value of said first and said second rolling heights (H1, H2) measured at an identical point of said sliding path, defines a cam profile offset at the point in which it is measured; and in that said first and second cams (20, 21) are configured and disposed so that both said first and second rolling heights (H1, H2) are invariable along said at least one first rectilinear portion and along said at least one first curved portion, so that the cam profile offset is constant both along the first rectilinear portion and also along the first curved portion, while at least one of either said first or second rolling heights (H1, H2) has a variable value along the first transition zone and also the cam profile offset has a variable value along the first transition zone. - a stationary sliding track extending along a continuous sliding path free of interruptions; - a mobile unit which can be moved on said sliding track in a direction of advance; - motor means configured so as to move said mobile unit on said sliding track; - a first rolling guide which extends along said sliding path, disposed in the proximity of said sliding track and having at least one first rectilinear portion and at least one first curved portion; said first rolling guide has a first transition zone interposed between the first rectilinear portion and the first curved portion and comprises a first and a second cam (20, 21) having respectively a first and a second rolling surface (20a, 21a), and said first rolling unit comprises a first and a second rolling element (24, 25) configured to roll respectively over said first and second rolling surface (20a, 21a), around respective first and second rolling axes (X1, X2), not coinciding with each other and distanced in said direction of advance, said first and second rolling surfaces (20a, 21a) having a respective first and second width (L1, L2) constant along said sliding path and being disposed at a respective first and second rolling height (H1, H2) with respect to said sliding track, wherein the difference, in absolute value, between the value of said first and said second rolling heights (H1, H2) measured at an identical point of said sliding path, defines a cam profile offset at the point in which it is measured; and in that said first and second cams (20, 21) are configured and disposed so that both said first and second rolling heights (H1, H2) are invariable along said at least one first rectilinear portion and along said at least one first curved portion, so that the cam profile offset is constant both along the first rectilinear portion and also along the first curved portion, while at least one of either said first or second rolling heights (H1, H2) has a variable value along the first transition zone and also the cam profile offset has a variable value along the first transition zone.