1100 clip-ons

Does anyone know what the Fork Diameter on the 1100 is for Clip-On handlebars? I know the 800 is 51mm. If the 800 has forks that are 4mm less (41mm) in diameter than the 1100 (45mm) would it be safe to assume the clip-ons would need to be 55mm for the 1100? Has anyone had firsthand experience...