From Susa its twisty through the woods, see the RoadMC boys at speed on ROADMC.COM The hairpin section is great for a sportsbike, not good for anything that has ground clearance problems when cornering. Past the lake its fast and smooth. The French side has nice bends but the surface is changeable, overbanding & subsidence in places.
rode the Mont Cenis this summer, lovely road, plenty to explore if youre into off roading
The Mont Cenis pass is brilliant, great road, a bit dangerous but worth the crack.
Flowing section of quite predictable (if blind in places). Patchy surface and downhill bumps need some care if you're going for it. Otherwise an excellent downhill section.