Funny thing actually. My TS250X comes standard with an altitude compensator which I daresay works much the same way as that Holtzman unit does. I wonder if it also adjusts for temperature? And this is with a Mikuni TM flatslide carb.
Cmsnl has one for 230 euros.
Peter Stevens appears to have had one at some stage going by this document: http://www.docstoc.com/docs/76699994...olete-Location
But no price listed.
Jeffery Honda nil stock, BikePartsSuz nil stock.