Alpi , That's one of the eBay contact's I'm waiting to hear back from. Go figure. Either they don't know how to measure it, or business is so good they don't need us. It appears the TT ABS kit is no longer available. I would like a close look at some WP axle clamps. I would guess it could be drilled and tapped for a couple short 4mm bolts. This should allow a plate to be mounted to carry the ABS sensor. Maybe even use the fork guard lower mounting location. I need to see one in person.