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dal sito specialized: 2BLISS MTB TIRES
There's a reason why our MTB pro team rides 2Bliss tires-they want a tire that can handle the low pressure they run (sometimes 25 psi) for durability and better traction, but they also want light weight. Specialized 2Bliss blends the best of both worlds. It's not your standard tubetype (TT), which is lightweight, but can fall short on puncture resistance and "burps" when used with sealant. And it's not your standard tubeless (UST) that reduces pinch flats and the need for sealant, but often adds 200+ grams. 2Bliss is a whole new design that uses TT casing with a special UST bead, replacing the standard UST heavy backing with strategically placed rubber only around the bead. The result is a perfect tire for the discerning MTB rider: low pressure allowance, no burping and fewer grams than its forefathers.
Most of our MTB tires come in the revolutionary 2Bliss configuration, except for Sport models (DH and 29-inch tires excluded); TT and UST are no more. If you want to run our 2Bliss with a tube, be our guest. Without a tube, just grab a batch of our AirLock® Pro sealant, and you're well on your way to a longer, better mountain ride, again and again.