Never saw a need for UHD tubes. If a thorn or a nail goes through the tire carcass, it's going to go through the tube. Buy two name brand standard weight tubes for the price of one UHD and put the other in your panniers.
I'd be unstoppable if not for Law Enforcement and Physics !
When your 6'8" with a 40" inseam, the bikes that fit you are limited ! ! !
2004 BMW R1150GS Adventure for street work / KTM 950 Super Enduro for Dirt work !