Originally Posted by bigdave-gs
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.
That is my perspective too. A 4mm ultra HD tube still has no chance against a 50mm long mesquite thorn, of which there are thousands of in my area. So I run a regular tube with RideOn sealant. No other choice unless you want to fix flats all day and not ride. On a real dirt bike we all run bibs.
The UHD tubes are way too heavy also. No upside at all for my purposes.