Thank you for this. I wasn't aware of this company. Gonna check out their products.
I've been using the Woodcraft 25mm riser clip-ons on my F3 for years. There has been no issues with clearance on the racing fairing upper.The woodcraft are a bit bulky compared to some others, and the limiting factor on this is going to be clearance with the upper when moving the bars from lock to lock.
I have been looking as well for something but not quite as much as what your talking about, as 2-3" is not possible without going with a different top triple, then adding bars.
I am thinking more like 10-15mm..
Someone somewhere had put on a top triple with bars on a F3, (not my cup of tea though).
I have these and they are great!I have tried different bar ends........I need to find a really heavy set.......if anyone finds any please post a link.