Maxxis Downhill 26 Inch Tube
If you ride downhill you want it fast as possible and twice as strong. This tube is super burly and thick, and weighs more than the average road tire, so you know it will hold up.
Had this tubes on my DH bike and I pinched flat the front tube/ front wheel. Actually had 2 cuts parallel to each other about an inch apart. The cut is about 4mm on both. Had it for about 1 season of riding only. I don't know, could be a fluke or too low of a tire pressure. So far the rears are holding, for now...
pretty heavy but if your not a weight weenie you will love this, no thorn flats anymore!