Newb here with question about fork size and pics

[TeflonS3]

After drooling over the S3 since '05, i finally picked her up a few weeks ago
Im looking to swap out the handle bars for some clip ons. LSL seems to make some decent ones with a slight rise. http://www.spieglerusa.com/cfm/clipon.cfm?type=offset

My question is, what size are the forks where you would mount clip ons?

I snapped a pic of the S3 the first day i brought her home

[DEcosse]

52mm

Other options include
Woodcraft
Tomaselli
Vortex
Gilles (probably best there is for adjustability)
CycleCat
HeliBars

Here's a thread on clip-ons for the 1050 S3

[TeflonS3]

Mucho gracias