I'm Ultremo ZX at the moment which I think from memory are at the lighter end of the spectrum. I've never gone down the lightweight tube route. Are latex tubes worth it or do they tend to be a bit fragile?
i tried latex tubes last year but they both exploded before I even got out the door. Apparently you're supposed to use talcum powder or some shit with them. Sorta soured on the idea since then :(
IIRC butyl tubes are generally lighter than latex anyway, right?
What tyres and tubes are you going to use?